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{"workbook":{"problemsBrief":"{\"POJ-3069\":[\"Saruman\\u0027s Army\",10239,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dStanford+Local+2006\\\"\\u003eStanford Local 2006\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-3068\":[\"\\\"Shortest\\\" pair of paths\",879,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dSoutheastern+Europe+2006\\\"\\u003eSoutheastern Europe 2006\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-1201\":[\"Intervals\",8915,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dSouthwestern+Europe+2002\\\"\\u003eSouthwestern Europe 2002\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-1328\":[\"Radar Installation\",24608,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dBeijing+2002\\\"\\u003eBeijing 2002\\u003c/a\\u003e\\u003c/div\\u003e\"],\"Aizu-2230\":[\"How to Create a Good Game\",257,\"ACM-ICPC Japan Alumni Group Summer Camp 2010 Day 4\"],\"POJ-3190\":[\"Stall Reservations\",5964,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dUSACO+2006+February+Silver\\\"\\u003eUSACO 2006 February Silver\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-3076\":[\"Sudoku\",1410,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dSoutheastern+Europe+2006\\\"\\u003eSoutheastern Europe 2006\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-3074\":[\"Sudoku\",2485,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dStanford+Local+2006\\\"\\u003eStanford Local 2006\\u003c/a\\u003e\\u003c/div\\u003e\"],\"Aizu-2224\":[\"Save your cats\",1874,\"ACM-ICPC Japan Alumni Group Summer Camp 2010 Day 4\"],\"POJ-2785\":[\"4 Values whose Sum is 0\",9688,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dSouthwestern+Europe+2005\\\"\\u003eSouthwestern Europe 2005\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-2549\":[\"Sumsets\",2637,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dWaterloo+local+2001.06.02\\\"\\u003eWaterloo local 2001.06.02\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-2429\":[\"GCD \\u0026amp; LCM Inverse\",1866,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dPOJ+Achilles\\\"\\u003ePOJ Achilles\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-3168\":[\"Barn Expansion\",573,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dUSACO+2005+December+Gold\\\"\\u003eUSACO 2005 December Gold\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-2079\":[\"Triangle\",1915,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dShanghai+2004+Preliminary\\\"\\u003eShanghai 2004 Preliminary\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-3169\":[\"Layout\",7269,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dUSACO+2005+December+Gold\\\"\\u003eUSACO 2005 December Gold\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-3045\":[\"Cow Acrobats\",3239,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dUSACO+2005+November+Silver\\\"\\u003eUSACO 2005 November Silver\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-2991\":[\"Crane\",1856,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dCTU+Open+2005\\\"\\u003eCTU Open 2005\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-3046\":[\"Ant Counting\",2801,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dUSACO+2005+November+Silver\\\"\\u003eUSACO 2005 November Silver\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-3723\":[\"Conscription\",5968,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dPOJ+Monthly+Contest+%E2%80%93+2009.04.05\\\"\\u003ePOJ Monthly Contest – 2009.04.05\\u003c/a\\u003e, windy7926778\\u003c/div\\u003e\"],\"Aizu-2256\":[\"Divide the Cake\",139,\"ACM-ICPC Japan Alumni Group Practice Contest for Japan Domestic 2011\"],\"CodeForces-138D\":[\"World of Darkraft\",557,\"\\u003ca style\\u003d\\\"color: black\\\" href\\u003d\\\"https://codeforces.com/contest/138\\\"\\u003eCodeforces Beta Round 99 (Div. 1)\\u003c/a\\u003e\"],\"Aizu-2251\":[\"Merry Christmas\",575,\"ACM-ICPC Japan Alumni Group Practice Contest for Asia Regionals 2010\"],\"POJ-3608\":[\"Bridge Across Islands\",1549,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dPOJ+Founder+Monthly+Contest+%E2%80%93+2008.06.29\\\"\\u003ePOJ Founder Monthly Contest – 2008.06.29\\u003c/a\\u003e, Lei Tao\\u003c/div\\u003e\"],\"POJ-3729\":[\"Facer’s string\",409,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dPOJ+Monthly+Contest+%E2%80%93+2009.04.05\\\"\\u003ePOJ Monthly Contest – 2009.04.05\\u003c/a\\u003e, Facer\\u003c/div\\u003e\"],\"POJ-3728\":[\"The merchant\",1558,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dPOJ+Monthly+Contest+%E2%80%93+2009.04.05\\\"\\u003ePOJ Monthly Contest – 2009.04.05\\u003c/a\\u003e, GaoYihan\\u003c/div\\u003e\"],\"POJ-3050\":[\"Hopscotch\",4460,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dUSACO+2005+November+Bronze\\\"\\u003eUSACO 2005 November Bronze\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-3171\":[\"Cleaning Shifts\",1402,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dUSACO+2005+December+Silver\\\"\\u003eUSACO 2005 December Silver\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-3293\":[\"Rectilinear polygon\",235,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dWaterloo+Local+Contest\\\"\\u003eWaterloo Local Contest\\u003c/a\\u003e, 2006.9.30\\u003c/div\\u003e\"],\"POJ-2082\":[\"Terrible Sets\",2359,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dShanghai+2004+Preliminary\\\"\\u003eShanghai 2004 Preliminary\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-3292\":[\"Semi-prime H-numbers\",4495,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dWaterloo+Local+Contest\\\"\\u003eWaterloo Local Contest\\u003c/a\\u003e, 2006.9.30\\u003c/div\\u003e\"],\"POJ-3176\":[\"Cow Bowling\",14858,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dUSACO+2005+December+Bronze\\\"\\u003eUSACO 2005 December Bronze\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-3057\":[\"Evacuation\",1003,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dThe+2006+Benelux+Algorithm+Programming+Contest\\\"\\u003eThe 2006 Benelux Algorithm Programming Contest\\u003c/a\\u003e\\u003c/div\\u003e\"],\"Aizu-2249\":[\"Road Construction\",2140,\"ACM-ICPC Japan Alumni Group Practice Contest for Asia Regionals 2010\"],\"POJ-2886\":[\"Who Gets the Most Candies?\",3443,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dPOJ+Monthly--2006.07.30\\\"\\u003ePOJ Monthly--2006.07.30\\u003c/a\\u003e, Sempr\\u003c/div\\u003e\"],\"POJ-3734\":[\"Blocks\",4035,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dPKU+Campus+2009+%28POJ+Monthly+Contest+%E2%80%93+2009.05.17%29\\\"\\u003ePKU Campus 2009 (POJ Monthly Contest – 2009.05.17)\\u003c/a\\u003e, Simon\\u003c/div\\u003e\"],\"POJ-1795\":[\"DNA Laboratory\",494,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dTUD+Programming+Contest+2004\\\"\\u003eTUD Programming Contest 2004\\u003c/a\\u003e, Darmstadt, Germany\\u003c/div\\u003e\"],\"POJ-2763\":[\"Housewife Wind\",2925,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dPOJ+Monthly--2006.02.26\\\"\\u003ePOJ Monthly--2006.02.26\\u003c/a\\u003e,zgl \\u0026amp; twb\\u003c/div\\u003e\"],\"Aizu-0189\":[\"Convenient Location\",2951,\"6th PC Koshien, Final\"],\"POJ-3617\":[\"Best Cow Line\",11340,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dUSACO+2007+November+Silver\\\"\\u003eUSACO 2007 November Silver\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-2407\":[\"Relatives\",8031,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dWaterloo+local+2002.07.01\\\"\\u003eWaterloo local 2002.07.01\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-3616\":[\"Milking Time\",8704,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dUSACO+2007+November+Silver\\\"\\u003eUSACO 2007 November Silver\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-3735\":[\"Training little cats\",2542,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dPKU+Campus+2009+%28POJ+Monthly+Contest+%E2%80%93+2009.05.17%29\\\"\\u003ePKU Campus 2009 (POJ Monthly Contest – 2009.05.17)\\u003c/a\\u003e, Facer\\u003c/div\\u003e\"],\"POJ-3614\":[\"Sunscreen\",4776,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dUSACO+2007+November+Gold\\\"\\u003eUSACO 2007 November Gold\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-3977\":[\"Subset\",1301,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dSeventh+ACM+Egyptian+National+Programming+Contest\\\"\\u003eSeventh ACM Egyptian National Programming Contest\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-2409\":[\"Let it Bead\",4141,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dUlm+Local+2000\\\"\\u003eUlm Local 2000\\u003c/a\\u003e\\u003c/div\\u003e\"],\"UVA-10181\":[\"15-Puzzle Problem\",2092,null],\"POJ-3061\":[\"Subsequence\",14503,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dSoutheastern+Europe+2006\\\"\\u003eSoutheastern Europe 2006\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-3180\":[\"The Cow Prom\",1759,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dUSACO+2006+January+Silver\\\"\\u003eUSACO 2006 January Silver\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-3181\":[\"Dollar Dayz\",3776,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dUSACO+2006+January+Silver\\\"\\u003eUSACO 2006 January Silver\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-3187\":[\"Backward Digit Sums\",5616,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dUSACO+2006+February+Gold+%26+Silver\\\"\\u003eUSACO 2006 February Gold \\u0026amp; Silver\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-3185\":[\"The Water Bowls\",2682,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dUSACO+2006+January+Bronze\\\"\\u003eUSACO 2006 January Bronze\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-3422\":[\"Kaka\\u0027s Matrix Travels\",2810,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dPOJ+Monthly--2007.10.06\\\"\\u003ePOJ Monthly--2007.10.06\\u003c/a\\u003e, Huang, Jinsong\\u003c/div\\u003e\"],\"POJ-1486\":[\"Sorting Slides\",1768,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dSouthwestern+European+Regional+Contest+1998\\\"\\u003eSouthwestern European Regional Contest 1998\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-3421\":[\"X-factor Chains\",2795,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dPOJ+Monthly--2007.10.06\\\"\\u003ePOJ Monthly--2007.10.06\\u003c/a\\u003e, ailyanlu@zsu\\u003c/div\\u003e\"],\"POJ-3662\":[\"Telephone Lines\",3352,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dUSACO+2008+January+Silver\\\"\\u003eUSACO 2008 January Silver\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-3420\":[\"Quad Tiling\",1938,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dPOJ+Monthly--2007.10.06\\\"\\u003ePOJ Monthly--2007.10.06\\u003c/a\\u003e, Dagger\\u003c/div\\u003e\"],\"POJ-1127\":[\"Jack Straws\",2080,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dEast+Central+North+America+1994\\\"\\u003eEast Central North America 1994\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-3666\":[\"Making the Grade\",5061,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dUSACO+2008+February+Gold\\\"\\u003eUSACO 2008 February Gold\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-2456\":[\"Aggressive cows\",14325,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dUSACO+2005+February+Gold\\\"\\u003eUSACO 2005 February Gold\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-2217\":[\"Secretary\",546,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dCTU+FEE+Local+1998\\\"\\u003eCTU FEE Local 1998\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-3669\":[\"Meteor Shower\",6373,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dUSACO+2008+February+Silver\\\"\\u003eUSACO 2008 February Silver\\u003c/a\\u003e\\u003c/div\\u003e\"],\"Aizu-0121\":[\"Seven Puzzle\",2999,\"3rd PC Koshien, Final\"],\"POJ-1011\":[\"Sticks\",22380,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dCentral+Europe+1995\\\"\\u003eCentral Europe 1995\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-2100\":[\"Graveyard Design\",2766,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dNortheastern+Europe+2004\\\"\\u003eNortheastern Europe 2004\\u003c/a\\u003e, Northern Subregion\\u003c/div\\u003e\"],\"POJ-1258\":[\"Agri-Net\",24087,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dUSACO+102\\\"\\u003eUSACO 102\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-2226\":[\"Muddy Fields\",4091,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dUSACO+2005+January+Gold\\\"\\u003eUSACO 2005 January Gold\\u003c/a\\u003e\\u003c/div\\u003e\"],\"Aizu-0005\":[\"GCD and LCM\",12042,\"1st PC Koshien, Final\"],\"POJ-3678\":[\"Katu Puzzle\",3412,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dPOJ+Founder+Monthly+Contest+%E2%80%93+2008.07.27\\\"\\u003ePOJ Founder Monthly Contest – 2008.07.27\\u003c/a\\u003e, Dagger\\u003c/div\\u003e\"],\"POJ-1017\":[\"Packets\",19458,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dCentral+Europe+1996\\\"\\u003eCentral Europe 1996\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-2348\":[\"Euclid\\u0027s Game\",4208,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dWaterloo+local+2002.09.28\\\"\\u003eWaterloo local 2002.09.28\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-1930\":[\"Dead Fraction\",1711,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dWaterloo+local+2003.09.27\\\"\\u003eWaterloo local 2003.09.27\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-2345\":[\"Central heating\",374,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dUral+State+University+Internal+Contest+October%272000+Students+Session\\\"\\u003eUral State University Internal Contest October\\u00272000 Students Session\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-2104\":[\"K-th Number\",14064,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dNortheastern+Europe+2004\\\"\\u003eNortheastern Europe 2004\\u003c/a\\u003e, Northern Subregion\\u003c/div\\u003e\"],\"CodeForces-25E\":[\"Test\",2572,\"\\u003ca style\\u003d\\\"color: black\\\" href\\u003d\\\"https://codeforces.com/contest/25\\\"\\u003eCodeforces Beta Round 25 (Div. 2 Only)\\u003c/a\\u003e\"],\"POJ-2229\":[\"Sumsets\",8986,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dUSACO+2005+January+Silver\\\"\\u003eUSACO 2005 January Silver\\u003c/a\\u003e\\u003c/div\\u003e\"],\"Aizu-0009\":[\"Prime Number\",10757,\"1st PC Koshien, Final\"],\"POJ-3680\":[\"Intervals\",2262,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dPOJ+Founder+Monthly+Contest+%E2%80%93+2008.07.27\\\"\\u003ePOJ Founder Monthly Contest – 2008.07.27\\u003c/a\\u003e, windy7926778\\r\\u003cbr\\u003e\\u003c/div\\u003e\"],\"Aizu-2308\":[\"White Bird\",539,\"ACM-ICPC Japan Alumni Group Summer Camp 2011 Day 3\"],\"POJ-2431\":[\"Expedition\",7151,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dUSACO+2005+U+S+Open+Gold\\\"\\u003eUSACO 2005 U S Open Gold\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-2311\":[\"Cutting Game\",2313,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dPOJ+Monthly\\\"\\u003ePOJ Monthly\\u003c/a\\u003e,CHEN Shixi(xreborner)\\u003c/div\\u003e\"],\"POJ-1222\":[\"EXTENDED LIGHTS OUT\",7755,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dGreater+New+York+2002\\\"\\u003eGreater New York 2002\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-3641\":[\"Pseudoprime numbers\",5598,\"\\u003cdiv 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Monthly\\u003c/a\\u003e,uni\\u003c/div\\u003e\"],\"POJ-3523\":[\"The Morning after Halloween\",448,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dJapan+2007\\\"\\u003eJapan 2007\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-2676\":[\"Sudoku\",10262,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dSoutheastern+Europe+2005\\\"\\u003eSoutheastern Europe 2005\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-1466\":[\"Girls and Boys\",4499,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dSoutheastern+Europe+2000\\\"\\u003eSoutheastern Europe 2000\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-2559\":[\"Largest Rectangle in a Histogram\",9382,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dUlm+Local+2003\\\"\\u003eUlm Local 2003\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-3526\":[\"The Teacher’s Side of Math\",163,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dJapan+2007\\\"\\u003eJapan 2007\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-3411\":[\"Paid Roads\",2420,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dNortheastern+Europe+2002\\\"\\u003eNortheastern Europe 2002\\u003c/a\\u003e, Western Subregion\\u003c/div\\u003e\"],\"POJ-3532\":[\"Resistance\",291,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dPOJ+Founder+Monthly+Contest+%E2%80%93+2008.03.16\\\"\\u003ePOJ Founder Monthly Contest – 2008.03.16\\u003c/a\\u003e, g201513\\u003c/div\\u003e\"],\"POJ-2441\":[\"Arrange the Bulls\",1686,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dPOJ+Monthly\\\"\\u003ePOJ Monthly\\u003c/a\\u003e,TN\\u003c/div\\u003e\"],\"POJ-3415\":[\"Common Substrings\",3048,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dPOJ+Monthly--2007.10.06\\\"\\u003ePOJ Monthly--2007.10.06\\u003c/a\\u003e, wintokk\\u003c/div\\u003e\"],\"POJ-1236\":[\"Network of Schools\",8454,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dIOI+1996\\\"\\u003eIOI 1996\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-1113\":[\"Wall\",9226,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dNortheastern+Europe+2001\\\"\\u003eNortheastern Europe 2001\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-2686\":[\"Traveling by Stagecoach\",1876,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dJapan+2005+Domestic\\\"\\u003eJapan 2005 Domestic\\u003c/a\\u003e\\u003c/div\\u003e\"],\"Aizu-2200\":[\"Mr. Rito Post Office\",1301,\"ACM-ICPC Japan Alumni Group Practice Contest for Japan Domestic 2010\"],\"POJ-2566\":[\"Bound Found\",2891,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dUlm+Local+2001\\\"\\u003eUlm Local 2001\\u003c/a\\u003e\\u003c/div\\u003e\"],\"Aizu-2201\":[\"Immortal Jewels\",377,\"ACM-ICPC Japan Alumni Group Practice Contest for Japan Domestic 2010\"],\"POJ-1912\":[\"A highway and the seven dwarfs\",426,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dCEOI+2002\\\"\\u003eCEOI 2002\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-3537\":[\"Crosses and Crosses\",1535,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dNortheastern+Europe+2007\\\"\\u003eNortheastern Europe 2007\\u003c/a\\u003e, Northern Subregion\\u003c/div\\u003e\"],\"UVA-12161\":[\"Ironman Race in Treeland\",184,null],\"POJ-2376\":[\"Cleaning Shifts\",9398,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dUSACO+2004+December+Silver\\\"\\u003eUSACO 2004 December Silver\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-2377\":[\"Bad Cowtractors\",6151,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dUSACO+2004+December+Silver\\\"\\u003eUSACO 2004 December Silver\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-2135\":[\"Farm Tour\",5156,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dUSACO+2003+February+Green\\\"\\u003eUSACO 2003 February Green\\u003c/a\\u003e\\u003c/div\\u003e\"],\"UVA-10245\":[\"The Closest Pair Problem\",5376,null],\"POJ-1286\":[\"Necklace of Beads\",3823,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dXi%27an+2002\\\"\\u003eXi\\u0027an 2002\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-3469\":[\"Dual Core CPU\",4506,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dPOJ+Monthly--2007.11.25\\\"\\u003ePOJ Monthly--2007.11.25\\u003c/a\\u003e, Zhou Dong\\u003c/div\\u003e\"],\"POJ-2139\":[\"Six Degrees of Cowvin Bacon\",4192,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dUSACO+2003+March+Orange\\\"\\u003eUSACO 2003 March Orange\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-3468\":[\"A Simple Problem with Integers\",29926,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dPOJ+Monthly--2007.11.25\\\"\\u003ePOJ Monthly--2007.11.25\\u003c/a\\u003e, Yang Yi\\u003c/div\\u003e\"],\"POJ-3104\":[\"Drying\",6687,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dNortheastern+Europe+2005\\\"\\u003eNortheastern Europe 2005\\u003c/a\\u003e, Northern Subregion\\u003c/div\\u003e\"],\"POJ-2932\":[\"Coneology\",822,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dMIT+Programming+Contest+2005\\\"\\u003eMIT Programming Contest 2005\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-3109\":[\"Inner Vertices\",670,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dNortheastern+Europe+2005\\\"\\u003eNortheastern Europe 2005\\u003c/a\\u003e, Northern Subregion\\u003c/div\\u003e\"],\"UVA-10006\":[\"Carmichael Numbers\",10923,null],\"POJ-3470\":[\"Walls\",283,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dPOJ+Monthly--2007.11.25\\\"\\u003ePOJ Monthly--2007.11.25\\u003c/a\\u003e, Zhou Dong\\u003c/div\\u003e\"],\"POJ-1054\":[\"The Troublesome Frog\",2558,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dIOI+2002\\\"\\u003eIOI 2002\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-2385\":[\"Apple Catching\",7307,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dUSACO+2004+November\\\"\\u003eUSACO 2004 November\\u003c/a\\u003e\\u003c/div\\u003e\"],\"CodeForces-97B\":[\"Superset\",1024,\"\\u003ca style\\u003d\\\"color: black\\\" href\\u003d\\\"https://codeforces.com/contest/97\\\"\\u003eYandex.Algorithm 2011: Finals\\u003c/a\\u003e\"],\"POJ-3111\":[\"K Best\",2732,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dNortheastern+Europe+2005\\\"\\u003eNortheastern Europe 2005\\u003c/a\\u003e, Northern Subregion\\u003c/div\\u003e\"],\"POJ-3233\":[\"Matrix Power Series\",9290,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dPOJ+Monthly--2007.06.03\\\"\\u003ePOJ Monthly--2007.06.03\\u003c/a\\u003e, Huang, Jinsong\\u003c/div\\u003e\"],\"POJ-2386\":[\"Lake Counting\",23770,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dUSACO+2004+November\\\"\\u003eUSACO 2004 November\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-1852\":[\"Ants\",12022,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dWaterloo+local+2004.09.19\\\"\\u003eWaterloo local 2004.09.19\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-2823\":[\"Sliding Window\",15426,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dPOJ+Monthly--2006.04.28\\\"\\u003ePOJ Monthly--2006.04.28\\u003c/a\\u003e, Ikki\\u003c/div\\u003e\"],\"POJ-1979\":[\"Red and Black\",25934,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dJapan+2004+Domestic\\\"\\u003eJapan 2004 Domestic\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-1180\":[\"Batch Scheduling\",1815,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dIOI+2002\\\"\\u003eIOI 2002\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-3484\":[\"Showstopper\",801,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dSoutheastern+Europe+2007\\\"\\u003eSoutheastern Europe 2007\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-2395\":[\"Out of Hay\",6532,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dUSACO+2005+March+Silver\\\"\\u003eUSACO 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href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dUSACO+2005+March+Gold\\\"\\u003eUSACO 2005 March Gold\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-2393\":[\"Yogurt factory\",8320,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dUSACO+2005+March+Gold\\\"\\u003eUSACO 2005 March Gold\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-2112\":[\"Optimal Milking\",4532,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dUSACO+2003+U+S+Open\\\"\\u003eUSACO 2003 U S Open\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-3686\":[\"The Windy\\u0027s\",1787,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dPOJ+Founder+Monthly+Contest+%E2%80%93+2008.08.31\\\"\\u003ePOJ Founder Monthly Contest – 2008.08.31\\u003c/a\\u003e, windy7926778\\u003c/div\\u003e\"],\"POJ-3685\":[\"Matrix\",2795,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dPOJ+Founder+Monthly+Contest+%E2%80%93+2008.08.31\\\"\\u003ePOJ Founder Monthly Contest – 2008.08.31\\u003c/a\\u003e, windy7926778\\r\\u003cbr\\u003e\\u003c/div\\u003e\"],\"POJ-3684\":[\"Physics Experiment\",1395,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dPOJ+Founder+Monthly+Contest+%E2%80%93+2008.08.31\\\"\\u003ePOJ Founder Monthly Contest – 2008.08.31\\u003c/a\\u003e, Simon\\u003c/div\\u003e\"],\"POJ-3683\":[\"Priest John\\u0027s Busiest Day\",2680,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dPOJ+Founder+Monthly+Contest+%E2%80%93+2008.08.31\\\"\\u003ePOJ Founder Monthly Contest – 2008.08.31\\u003c/a\\u003e, Dagger and Facer\\u003c/div\\u003e\"],\"POJ-3320\":[\"Jessica\\u0027s Reading Problem\",6836,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dPOJ+Monthly--2007.08.05\\\"\\u003ePOJ Monthly--2007.08.05\\u003c/a\\u003e, Jerry\\u003c/div\\u003e\"],\"POJ-3689\":[\"Equations\",78,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dPOJ+Founder+Monthly+Contest+%E2%80%93+2008.08.31\\\"\\u003ePOJ Founder Monthly Contest – 2008.08.31\\u003c/a\\u003e, Lei, Tao\\u003c/div\\u003e\"],\"POJ-3688\":[\"Cheat in the Game\",403,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dPOJ+Founder+Monthly+Contest+%E2%80%93+2008.08.31\\\"\\u003ePOJ Founder Monthly Contest – 2008.08.31\\u003c/a\\u003e, facer\\u003c/div\\u003e\"],\"POJ-2114\":[\"Boatherds\",923,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dCTU+Open+2004\\\"\\u003eCTU Open 2004\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-2236\":[\"Wireless Network\",16745,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dPOJ+Monthly\\\"\\u003ePOJ Monthly\\u003c/a\\u003e,HQM\\u003c/div\\u003e\"],\"POJ-2115\":[\"C Looooops\",8023,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dCTU+Open+2004\\\"\\u003eCTU Open 2004\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-1703\":[\"Find them, Catch them\",13384,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dPOJ+Monthly--2004.07.18\\\"\\u003ePOJ Monthly--2004.07.18\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-2914\":[\"Minimum Cut\",2731,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dBaidu+Star+2006+Semifinal\\\"\\u003eBaidu Star 2006 Semifinal\\u003c/a\\u003e\\r\\u003cbr\\u003eWang, Ying (Originator)\\r\\u003cbr\\u003eChen, Shixi (Test cases)\\u003c/div\\u003e\"],\"POJ-1704\":[\"Georgia and Bob\",4831,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dPOJ+Monthly--2004.07.18\\\"\\u003ePOJ Monthly--2004.07.18\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-2918\":[\"Tudoku\",1418,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dTUD+Programming+Contest+2006\\\"\\u003eTUD Programming Contest 2006\\u003c/a\\u003e, Darmstadt, Germany\\u003c/div\\u003e\"],\"Aizu-0118\":[\"Property Distribution \",5416,\"3rd PC Koshien, Final\"],\"POJ-2482\":[\"Stars in Your Window\",2525,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dPOJ+Contest\\\"\\u003ePOJ Contest\\u003c/a\\u003e,Author:kinfkong@ZSU\\u003c/div\\u003e\"],\"POJ-3692\":[\"Kindergarten\",3418,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003d2008+Asia+Hefei+Regional+Contest+Online+by+USTC\\\"\\u003e2008 Asia Hefei Regional Contest Online by USTC\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-3691\":[\"DNA repair\",2264,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003d2008+Asia+Hefei+Regional+Contest+Online+by+USTC\\\"\\u003e2008 Asia Hefei Regional Contest Online by USTC\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-3690\":[\"Constellations\",862,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003d2008+Asia+Hefei+Regional+Contest+Online+by+USTC\\\"\\u003e2008 Asia Hefei Regional Contest Online by USTC\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-1150\":[\"The Last Non-zero Digit\",1459,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003duva+10212\\\"\\u003euva 10212\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-1274\":[\"The Perfect Stall\",9932,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dUSACO+40\\\"\\u003eUSACO 40\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-2484\":[\"A Funny Game\",5178,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dPOJ+Contest\\\"\\u003ePOJ Contest\\u003c/a\\u003e,Author:Mathematica@ZSU\\u003c/div\\u003e\"],\"Aizu-1313\":[\"Intersection of Two Prisms\",329,\"ACM International Collegiate Programming Contest, Asia Regional 2010, Japan\"],\"POJ-3579\":[\"Median\",5494,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dPOJ+Founder+Monthly+Contest+%E2%80%93+2008.04.13\\\"\\u003ePOJ Founder Monthly Contest – 2008.04.13\\u003c/a\\u003e, Lei Tao\\u003c/div\\u003e\"],\"POJ-2010\":[\"Moo University - Financial Aid\",3026,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dUSACO+2004+March+Green\\\"\\u003eUSACO 2004 March Green\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-1284\":[\"Primitive Roots\",3138,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003d%E8%B4%BE%E6%80%A1%40pku\\\"\\u003e贾怡@pku\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-3581\":[\"Sequence\",1349,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dPOJ+Founder+Monthly+Contest+%E2%80%93+2008.04.13\\\"\\u003ePOJ Founder Monthly Contest – 2008.04.13\\u003c/a\\u003e, Yao Jinyu\\u003c/div\\u003e\"],\"POJ-3268\":[\"Silver Cow Party\",14853,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dUSACO+2007+February+Silver\\\"\\u003eUSACO 2007 February Silver\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-2975\":[\"Nim\",3340,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dStanford+Local+2005\\\"\\u003eStanford Local 2005\\u003c/a\\u003e\\u003c/div\\u003e\"],\"Aizu-0531\":[\"Paint Color\",1455,\"7th Japanese Olympiad in Informatics\"],\"POJ-1769\":[\"Minimizing maximizer\",1758,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dCentral+Europe+2003\\\"\\u003eCentral Europe 2003\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-2976\":[\"Dropping tests\",6640,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dStanford+Local+2005\\\"\\u003eStanford Local 2005\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-3709\":[\"K-Anonymous Sequence\",1539,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dPOJ+Founder+Monthly+Contest+%E2%80%93+2008.12.28\\\"\\u003ePOJ Founder Monthly Contest – 2008.12.28\\u003c/a\\u003e, Rainer\\u003c/div\\u003e\"],\"POJ-3708\":[\"Recurrent Function\",255,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dPOJ+Founder+Monthly+Contest+%E2%80%93+2008.12.28\\\"\\u003ePOJ Founder Monthly Contest – 2008.12.28\\u003c/a\\u003e, Yaojinyu\\u003c/div\\u003e\"],\"POJ-2739\":[\"Sum of Consecutive Prime Numbers\",15293,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dJapan+2005\\\"\\u003eJapan 2005\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-2186\":[\"Popular Cows\",11727,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dUSACO+2003+Fall\\\"\\u003eUSACO 2003 Fall\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-3273\":[\"Monthly Expense\",11927,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dUSACO+2007+March+Silver\\\"\\u003eUSACO 2007 March Silver\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-2184\":[\"Cow Exhibition\",5290,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dUSACO+2003+Fall\\\"\\u003eUSACO 2003 Fall\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-2068\":[\"Nim\",1238,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dJapan+2001\\\"\\u003eJapan 2001\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-3279\":[\"Fliptile\",8821,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dUSACO+2007+Open+Silver\\\"\\u003eUSACO 2007 Open Silver\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-3155\":[\"Hard Life\",1508,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dNortheastern+Europe+2006\\\"\\u003eNortheastern Europe 2006\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-2187\":[\"Beauty Contest\",7363,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dUSACO+2003+Fall\\\"\\u003eUSACO 2003 Fall\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-3276\":[\"Face The Right Way\",3396,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dUSACO+2007+March+Gold\\\"\\u003eUSACO 2007 March Gold\\u003c/a\\u003e\\u003c/div\\u003e\"],\"CodeForces-123D\":[\"String\",1326,\"\\u003ca style\\u003d\\\"color: black\\\" href\\u003d\\\"https://codeforces.com/contest/123\\\"\\u003eCodeforces Beta Round 92 (Div. 1 Only)\\u003c/a\\u003e\"],\"Aizu-2266\":[\"Cache Strategy\",156,\"University of Tokyo Programming Contest 2011\"],\"POJ-2987\":[\"Firing\",2189,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dPOJ+Monthly--2006.08.27\\\"\\u003ePOJ Monthly--2006.08.27\\u003c/a\\u003e, frkstyc\\u003c/div\\u003e\"],\"POJ-3713\":[\"Transferring Sylla\",598,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dPOJ+Founder+Monthly+Contest+%E2%80%93+2008.12.28\\\"\\u003ePOJ Founder Monthly Contest – 2008.12.28\\u003c/a\\u003e, Dagger\\u003c/div\\u003e\"],\"POJ-2749\":[\"Building roads\",1677,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dPOJ+Monthly--2006.01.22\\\"\\u003ePOJ Monthly--2006.01.22\\u003c/a\\u003e,zhucheng\\u003c/div\\u003e\"],\"POJ-1418\":[\"Viva Confetti\",356,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dJapan+2002+Kanazawa\\\"\\u003eJapan 2002 Kanazawa\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-3281\":[\"Dining\",8089,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dUSACO+2007+Open+Gold\\\"\\u003eUSACO 2007 Open Gold\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-3040\":[\"Allowance\",3635,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dUSACO+2005+October+Silver\\\"\\u003eUSACO 2005 October Silver\\u003c/a\\u003e\\u003c/div\\u003e\"],\"Aizu-0525\":[\"Osenbei\",2575,\"7th Japanese Olympiad in Informatics, Preliminary Round\"],\"POJ-3280\":[\"Cheapest Palindrome\",6630,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dUSACO+2007+Open+Gold\\\"\\u003eUSACO 2007 Open Gold\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-3041\":[\"Asteroids\",12939,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dUSACO+2005+November+Gold\\\"\\u003eUSACO 2005 November Gold\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-2195\":[\"Going Home\",8703,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dPacific+Northwest+2004\\\"\\u003ePacific Northwest 2004\\u003c/a\\u003e\\u003c/div\\u003e\"],\"CodeForces-86C\":[\"Genetic engineering\",809,\"\\u003ca style\\u003d\\\"color: black\\\" href\\u003d\\\"https://codeforces.com/contest/86\\\"\\u003eYandex.Algorithm 2011: Round 2\\u003c/a\\u003e\"],\"POJ-1981\":[\"Circle and Points\",1749,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dJapan+2004+Domestic\\\"\\u003eJapan 2004 Domestic\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-3246\":[\"Game\",321,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dPOJ+Monthly--2007.07.08\\\"\\u003ePOJ Monthly--2007.07.08\\u003c/a\\u003e, Wang, Dong\\u003c/div\\u003e\"],\"POJ-1065\":[\"Wooden Sticks\",10155,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dTaejon+2001\\\"\\u003eTaejon 2001\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-2155\":[\"Matrix\",8917,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dPOJ+Monthly\\\"\\u003ePOJ Monthly\\u003c/a\\u003e,Lou Tiancheng\\u003c/div\\u003e\"],\"POJ-1742\":[\"Coins\",10380,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dLouTiancheng%40POJ\\\"\\u003eLouTiancheng@POJ\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-3126\":[\"Prime Path\",19501,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dNorthwestern+Europe+2006\\\"\\u003eNorthwestern Europe 2006\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-1740\":[\"A New Stone Game\",3535,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dLouTiancheng%40POJ\\\"\\u003eLouTiancheng@POJ\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-3368\":[\"Frequent values\",6794,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dUlm+Local+2007\\\"\\u003eUlm Local 2007\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-1862\":[\"Stripies\",9540,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dNortheastern+Europe+2001\\\"\\u003eNortheastern Europe 2001\\u003c/a\\u003e, Northern Subregion\\u003c/div\\u003e\"],\"POJ-1741\":[\"Tree\",6884,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dLouTiancheng%40POJ\\\"\\u003eLouTiancheng@POJ\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-2836\":[\"Rectangular Covering\",786,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dPKU+Local+2006\\\"\\u003ePKU Local 2006\\u003c/a\\u003e, kicc\\u003c/div\\u003e\"],\"POJ-1986\":[\"Distance Queries\",4397,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dUSACO+2004+February\\\"\\u003eUSACO 2004 February\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-3009\":[\"Curling 2.0\",10911,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dJapan+2006+Domestic\\\"\\u003eJapan 2006 Domestic\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-2718\":[\"Smallest Difference\",4643,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dRocky+Mountain+2005\\\"\\u003eRocky Mountain 2005\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-1509\":[\"Glass Beads\",2540,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dCentral+Europe+1998\\\"\\u003eCentral Europe 1998\\u003c/a\\u003e\\u003c/div\\u003e\"],\"Aizu-2170\":[\"Marked Ancestor\",2355,\"ACM-ICPC Japan Alumni Group Summer Camp 2009 Day 3\"],\"Aizu-0558\":[\"Cheese\",4579,\"10th Japanese Olympiad in Informatics, Preliminary Round\"],\"POJ-3253\":[\"Fence Repair\",20723,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dUSACO+2006+November+Gold\\\"\\u003eUSACO 2006 November Gold\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-3494\":[\"Largest Submatrix of All 1’s\",2741,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dPOJ+Founder+Monthly+Contest+%E2%80%93+2008.01.31\\\"\\u003ePOJ Founder Monthly Contest – 2008.01.31\\u003c/a\\u003e, xfxyjwf\\u003c/div\\u003e\"],\"POJ-3250\":[\"Bad Hair Day\",8727,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dUSACO+2006+November+Silver\\\"\\u003eUSACO 2006 November Silver\\u003c/a\\u003e\\u003c/div\\u003e\"],\"SPOJ-QTREE5\":[\"Query on a tree V\",2141,\"XunYunbo, modified from ZJOI07\"],\"POJ-2046\":[\"Gap\",520,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dJapan+2003\\\"\\u003eJapan 2003\\u003c/a\\u003e,Aizu\\u003c/div\\u003e\"],\"POJ-3254\":[\"Corn Fields\",9797,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dUSACO+2006+November+Gold\\\"\\u003eUSACO 2006 November Gold\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-1990\":[\"MooFest\",4234,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dUSACO+2004+U+S+Open\\\"\\u003eUSACO 2004 U S Open\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-3134\":[\"Power Calculus\",1487,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dJapan+2006\\\"\\u003eJapan 2006\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-3255\":[\"Roadblocks\",6639,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dUSACO+2006+November+Gold\\\"\\u003eUSACO 2006 November Gold\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-1995\":[\"Raising Modulo Numbers\",11556,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dCTU+Open+1999\\\"\\u003eCTU Open 1999\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-3258\":[\"River Hopscotch\",9537,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dUSACO+2006+December+Silver\\\"\\u003eUSACO 2006 December Silver\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-3259\":[\"Wormholes\",19346,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dUSACO+2006+December+Gold\\\"\\u003eUSACO 2006 December Gold\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-2720\":[\"Last Digits\",317,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dRocky+Mountain+2005\\\"\\u003eRocky Mountain 2005\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-1631\":[\"Bridging signals\",7053,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dNorthwestern+Europe+2003\\\"\\u003eNorthwestern Europe 2003\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-2723\":[\"Get Luffy Out\",2383,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dBeijing+2005\\\"\\u003eBeijing 2005\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-2724\":[\"Purifying Machine\",1353,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dBeijing+2005\\\"\\u003eBeijing 2005\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-1759\":[\"Garland\",1455,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dNortheastern+Europe+2000\\\"\\u003eNortheastern Europe 2000\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-1082\":[\"Calendar Game\",2908,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dTaejon+2001\\\"\\u003eTaejon 2001\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-3260\":[\"The Fewest Coins\",2001,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dUSACO+2006+December+Gold\\\"\\u003eUSACO 2006 December Gold\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-3264\":[\"Balanced Lineup\",23650,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dUSACO+2007+January+Silver\\\"\\u003eUSACO 2007 January Silver\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-2175\":[\"Evacuation Plan\",991,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dNortheastern+Europe+2002\\\"\\u003eNortheastern Europe 2002\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-1084\":[\"Square Destroyer\",1957,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dTaejon+2001\\\"\\u003eTaejon 2001\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-3262\":[\"Protecting the Flowers\",5899,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dUSACO+2007+January+Silver\\\"\\u003eUSACO 2007 January Silver\\u003c/a\\u003e\\u003c/div\\u003e\"]}","joined":false,"groups":{}},"managingGroups":{},"author":"Trote_w","updateTime":1519106014000,"title":"挑战程序设计竞赛(第二版)题集","dislikeCnt":0,"content":"以下内容为个人整理,若有错误敬请指出。\ngcj及额外的内容并不全面,主要仍请参阅书籍。\n\n第一章:蓄势待发\n* 热身:[problem:POJ-1852]\n\n第二章:初出茅庐\n* 2.1:(穷竭搜索)[problem:POJ-2386]\n习题:\n深度优先搜索:[problem:POJ-1979][problem:Aizu-0118][problem:Aizu-0033][problem:POJ-3009]\n广度优先搜索:[problem:Aizu-0558][problem:POJ-3669][problem:Aizu-0121]\n穷竭搜索:[problem:POJ-2718][problem:POJ-3187][problem:POJ-3050][problem:Aizu-0525]\n* 2.2:(贪心)[problem:POJ-3617][problem:POJ-3069][problem:POJ-3253]\n区间:[problem:POJ-2376][problem:POJ-1328][problem:POJ-3190]\n其他:[problem:POJ-2393][problem:POJ-1017][problem:POJ-3040][problem:POJ-1862][problem:POJ-3262]\n* 2.3:(动态规划)\n基础:[problem:POJ-3176][problem:POJ-2229][problem:POJ-2385][problem:POJ-3616][problem:POJ-3280]\n优化递推关系式:[problem:POJ-1742][problem:POJ-3046][problem:POJ-3181]\n需稍加思考:[problem:POJ-1065][problem:POJ-1631][problem:POJ-3666][problem:POJ-2392][problem:POJ-2184]\n* 2.4:(简单数据结构)[problem:POJ-2431][problem:POJ-3253][problem:POJ-1182]\n优先队列:[problem:POJ-3614][problem:POJ-2010]\n并查集:[problem:POJ-2236][problem:POJ-1703][problem:Aizu-2170]\n* 2.5:(图)[problem:POJ-3255][problem:POJ-3723][problem:POJ-3169]\n最短路:[problem:Aizu-0189][problem:POJ-2139][problem:POJ-3259][problem:POJ-3268][problem:Aizu-2249][problem:Aizu-2200]\n最小生成树:[problem:POJ-1258][problem:POJ-2377][problem:Aizu-2224][problem:POJ-2395]\n* 2.6:(简单数学问题)[problem:UVA-10006]\n辗转相除法:[problem:Aizu-0005][problem:POJ-2429][problem:POJ-1930]\n素数:[problem:Aizu-0009][problem:POJ-3126][problem:POJ-3421][problem:POJ-3292]\n快速幂运算:[problem:POJ-3641][problem:POJ-1995]\n\n 第三章:出类拔萃\n* 3.1:(二分搜索)[problem:POJ-1064][problem:POJ-2456]\n最大化最小值:[problem:POJ-3258][problem:POJ-3273][problem:POJ-3104][problem:POJ-3045]\n最大化平均值:[problem:POJ-2976][problem:POJ-3111]\n查找第K大的值:[problem:POJ-3579][problem:POJ-3685]\n最小化第K大的值[problem:POJ-2010][problem:POJ-3662]\n其他:[problem:POJ-1759][problem:POJ-3484]\n* 3.2:(常用技巧精选)[problem:POJ-3061][problem:POJ-3320][problem:POJ-3276][problem:POJ-3279][problem:POJ-3684][problem:POJ-2785]\n尺取法:[problem:POJ-2566][problem:POJ-2739][problem:POJ-2100]\n反转:[problem:POJ-3185][problem:POJ-1222]\n弹性碰撞:[problem:POJ-2674]\n折半枚举:[problem:POJ-3977][problem:POJ-2549]\n坐标离散化:[problem:Aizu-0531]\n* 3.3:(线段树与树状数组)[problem:POJ-2991][problem:POJ-3468][problem:POJ-2104]\n树状数组:[problem:POJ-1990][problem:POJ-3109][problem:POJ-2155][problem:POJ-2886]\n线段树和平方分割:[problem:POJ-3264][problem:POJ-3368][problem:POJ-3470][problem:POJ-1201][problem:UVA-11990]\n* 3.4:(熟练掌握动态规划)[problem:POJ-2686][problem:POJ-3734][problem:POJ-3233][problem:POJ-1769]\n状态压缩DP:[problem:POJ-2441][problem:POJ-3254][problem:POJ-2836][problem:POJ-1795][problem:POJ-3411]\n矩阵的幂:[problem:POJ-3420][problem:POJ-3735]\n利用数据结构高效求解:[problem:POJ-3171]\n* 3.5:(网络流)[problem:POJ-3041][problem:POJ-3057][problem:POJ-3281][problem:POJ-3469][problem:POJ-2135][problem:POJ-2175][problem:POJ-3686][problem:POJ-3680]\n最大流最小割:[problem:POJ-3713][problem:POJ-2987][problem:POJ-2914][problem:POJ-3155]\n二分图匹配:[problem:POJ-1274][problem:POJ-2112][problem:POJ-1486][problem:POJ-1466][problem:POJ-3692][problem:POJ-2724][problem:POJ-2226][problem:Aizu-2251]\n最小费用流:[problem:POJ-3068][problem:POJ-2195][problem:POJ-3422][problem:Aizu-2266][problem:Aizu-2230]\n* 3.6:(计算几何)[problem:POJ-1127][problem:Aizu-2308][problem:POJ-2932][problem:POJ-2187][problem:Aizu-1313]\n极限情况:[problem:POJ-1981][problem:POJ-1418][problem:Aizu-2201]\n平面扫描:[problem:POJ-3168][problem:POJ-3293][problem:POJ-2482]\n凸包:[problem:POJ-1113][problem:POJ-1912][problem:POJ-3608][problem:POJ-2079][problem:POJ-3246][problem:POJ-3689]\n数值积分:[problem:Aizu-2256][problem:Aizu-2215]\n\n第四章:登峰造极\n* 4.1:(更加复杂的数学问题)\n模运算的世界:\n[problem:POJ-1150][problem:POJ-1284][problem:POJ-2115][problem:POJ-3708][problem:POJ-2720][GCJ Japan2011决赛B:细菌繁殖]\n矩阵:[problem:POJ-2345][problem:POJ-3532][problem:POJ-3526]\n计数:[problem:POJ-2407][problem:POJ-1286][problem:POJ-2409][problem:AOJ-2164][problem:AOJ-2214]\n* 4.2:(找出游戏的必胜策略)[problem:POJ-2484][problem:POJ-2348][problem:POJ-1704][problem:POJ-2311]\n推理与动态规划算法:[problem:POJ-1082][problem:POJ-2068][problem:POJ-3688][problem:POJ-1740]\nNim与Grundy数:[problem:POJ-2975][problem:POJ-3537][problem:CodeForces-138D][problem:POJ-2315]\n* 4.3:(成为图论大师之路)[problem:POJ-2186][problem:POJ-3683][problem:POJ-2763]\n强连通分量分解:[problem:POJ-3180][problem:POJ-1236]\n2-SAT:[problem:POJ-3678][problem:POJ-2723][problem:POJ-2749]\nLCA:[problem:POJ-1986][problem:POJ-3728]\n* 4.4:(常用技巧精选(二))[problem:POJ-2559][problem:POJ-3709]\n栈:[problem:POJ-3250][problem:POJ-2082][problem:POJ-3494]\n双端队列:[problem:POJ-2823][problem:POJ-3260][problem:POJ-1180][problem:AOJ-1070]\n* 4.5:(开动脑筋智慧搜索)数独([problem:POJ-2676][problem:POJ-2918][problem:POJ-3074][problem:POJ-3076])[problem:POJ-1084]\n剪枝:[problem:POJ-1011][problem:POJ-2046][problem:POJ-3134]\nA\\*与IDA\\*:[problem:POJ-3523][problem:POJ-2032][problem:UVA-10181]\n* 4.6:(划分、解决、合并:分治法)[problem:POJ-1741][problem:UVA-10245]\n数列上的分治法:[problem:POJ-1054]\n平面上的分治法:[GCJ 2009 World Finals B:Min Perimeter][problem:CodeForces-97B]\n树上的分治法:[problem:POJ-2114][problem:UVA-12161][problem:SPOJ-QTREE5]\n* 4.7:(华丽地处理字符串)[problem:POJ-3691][problem:POJ-3690][problem:POJ-3581][problem:POJ-2217]\n动态规划算法:[problem:AOJ-2212][problem:CodeForces-86C]\n字符串匹配:[problem:CodeForces-25E][problem:AOJ-1312]\n后缀数组:[problem:POJ-1509][problem:POJ-3415][problem:POJ-3729][problem:AOJ-2292][problem:CodeForces-123D]","threadId":30472,"likeCnt":290,"createTime":1486021040000,"isWorkbook":true,"viewCnt":45024,"openness":2,"fav":false,"id":46,"trustable":false}