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{"workbook":{"problemsBrief":"{\"POJ-2376\":[\"Cleaning Shifts\",9415,\"\\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-3069\":[\"Saruman\\u0027s Army\",10264,\"\\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-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\",5158,\"\\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\"],\"POJ-3068\":[\"\\\"Shortest\\\" pair of paths\",880,\"\\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-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\",4204,\"\\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-1201\":[\"Intervals\",8922,\"\\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-3468\":[\"A Simple Problem with Integers\",29974,\"\\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\",6863,\"\\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-1328\":[\"Radar Installation\",24714,\"\\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\"],\"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\"],\"POJ-3190\":[\"Stall Reservations\",5980,\"\\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-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-2385\":[\"Apple Catching\",7312,\"\\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-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\",9308,\"\\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\",23838,\"\\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\",12048,\"\\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-2785\":[\"4 Values whose Sum is 0\",9722,\"\\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\",2641,\"\\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-2823\":[\"Sliding Window\",15428,\"\\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\",26033,\"\\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\",1816,\"\\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 2005 March Silver\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-1064\":[\"Cable master\",11121,\"\\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-1182\":[\"食物链\",25685,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dNoi+01\\\"\\u003eNoi 01\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-2392\":[\"Space Elevator\",5592,\"\\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-2393\":[\"Yogurt factory\",8324,\"\\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-3169\":[\"Layout\",7272,\"\\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-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-3045\":[\"Cow Acrobats\",3240,\"\\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-3684\":[\"Physics Experiment\",1396,\"\\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-2991\":[\"Crane\",1857,\"\\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-3683\":[\"Priest John\\u0027s Busiest Day\",2682,\"\\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\",6840,\"\\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-3046\":[\"Ant Counting\",2804,\"\\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\",5973,\"\\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\"],\"POJ-2236\":[\"Wireless Network\",16775,\"\\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-1703\":[\"Find them, Catch them\",13397,\"\\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-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\",4465,\"\\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-2082\":[\"Terrible Sets\",2361,\"\\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-3176\":[\"Cow Bowling\",14868,\"\\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-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-1274\":[\"The Perfect Stall\",9933,\"\\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-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\"],\"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\",4042,\"\\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-3579\":[\"Median\",5505,\"\\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-1795\":[\"DNA Laboratory\",495,\"\\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\",2928,\"\\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\"],\"POJ-3617\":[\"Best Cow Line\",11355,\"\\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-3616\":[\"Milking Time\",8722,\"\\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 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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\",3777,\"\\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-2010\":[\"Moo University - Financial Aid\",3031,\"\\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-3187\":[\"Backward Digit Sums\",5653,\"\\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\",2683,\"\\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 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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-3666\":[\"Making the Grade\",5065,\"\\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\",14376,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca 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February Silver\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-3709\":[\"K-Anonymous Sequence\",1540,\"\\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-2739\":[\"Sum of Consecutive Prime Numbers\",15324,\"\\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\",11730,\"\\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\",11936,\"\\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\",5310,\"\\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-3279\":[\"Fliptile\",8858,\"\\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\",1510,\"\\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-3276\":[\"Face The Right Way\",3399,\"\\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\"],\"POJ-2100\":[\"Graveyard Design\",2770,\"\\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\",24156,\"\\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\"],\"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\",19487,\"\\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-2104\":[\"K-th Number\",14079,\"\\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-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-2229\":[\"Sumsets\",8993,\"\\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\"],\"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-3281\":[\"Dining\",8094,\"\\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\",3640,\"\\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\"],\"POJ-3280\":[\"Cheapest Palindrome\",6642,\"\\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\",12963,\"\\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-3680\":[\"Intervals\",2263,\"\\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\"],\"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\"],\"POJ-2431\":[\"Expedition\",7161,\"\\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-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-2674\":[\"Linear world\",929,\"\\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-1065\":[\"Wooden Sticks\",10157,\"\\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\",8926,\"\\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\",10406,\"\\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\",6803,\"\\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\",9545,\"\\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-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-2836\":[\"Rectangular Covering\",790,\"\\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\",4399,\"\\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\",10927,\"\\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-2559\":[\"Largest Rectangle in a Histogram\",9385,\"\\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-2718\":[\"Smallest Difference\",4658,\"\\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-3253\":[\"Fence Repair\",20840,\"\\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\",8731,\"\\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\"],\"POJ-3411\":[\"Paid Roads\",2423,\"\\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-3254\":[\"Corn Fields\",9800,\"\\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\",4244,\"\\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-2441\":[\"Arrange the Bulls\",1697,\"\\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-3255\":[\"Roadblocks\",6650,\"\\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-1236\":[\"Network of Schools\",8459,\"\\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-3258\":[\"River Hopscotch\",9542,\"\\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-2686\":[\"Traveling by Stagecoach\",1878,\"\\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\"],\"POJ-3259\":[\"Wormholes\",19364,\"\\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-1631\":[\"Bridging signals\",7055,\"\\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-2566\":[\"Bound Found\",2904,\"\\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\"],\"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\",1460,\"\\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-3260\":[\"The Fewest Coins\",2002,\"\\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\",23677,\"\\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\",993,\"\\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-3262\":[\"Protecting the Flowers\",5978,\"\\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":"zbx99","updateTime":1541765178000,"title":"挑战程序设计竞赛POJ例题及练习题分类","dislikeCnt":0,"content":"简单:\n1. 暴搜\n例题:[problem:POJ-2386]\n练习:[problem:POJ-1979],[problem:POJ-3009],[problem:POJ-3669],[problem:POJ-2718],[problem:POJ-3187],[problem:POJ-3050]\n2. 贪心\n例题:[problem:POJ-3617],[problem:POJ-3069]\n练习:[problem:POJ-2376],[problem:POJ-1328],[problem:POJ-3190],[problem:POJ-2393],[problem:POJ-1017],[problem:POJ-3040],[problem:POJ-1862],[problem:POJ-3262]\n3. 基础动态规划\n练习:[problem:POJ-3176],[problem:POJ-2229],[problem:POJ-2385],[problem:POJ-3616],[problem:POJ-3280](区间dp),[problem:POJ-1742],[problem:POJ-3046](优化递推式),[problem:POJ-3181](高精度),[problem:POJ-1065],[problem:POJ-1631],[problem:POJ-3666]([problem:Codeforces-13C]),[problem:POJ-2392],[problem:POJ-2184]\n4. 基础数据结构\n(1)优先队列\n例题:[problem:POJ-2431],[problem:POJ-3253]\n练习:[problem:POJ-3614],[problem:POJ-2010]\n(2)并查集\n例题:[problem:POJ-1182](种类并查集)\n练习:[problem:POJ-2236],[problem:POJ-1703](种类并查集)\n5. 基础图论\n(1)最短路\n例题:[problem:POJ-3255](次短路),[problem:POJ-3169](差分约束)\n练习:[problem:POJ-2139],[problem:POJ-3259](判负环),[problem:POJ-3268],[problem:POJ-1201](差分约束)\n(2)最小生成树\n例题:[problem:POJ-3723]\n练习:[problem:POJ-1258],[problem:POJ-2377],[problem:POJ-2395]\n6. 基础数学\n\n7. 二分搜索\n(1)最大化最小值(最小化最大值)\n例题:[problem:POJ-1064],[problem:POJ-2456]\n练习:[problem:POJ-3258],[problem:POJ-3273],[problem:POJ-3104],[problem:POJ-3045](可以是结论题)\n(2)01分数规划\n练习:[problem:POJ-2976],[problem:POJ-3111]\n(3)查找第k大的值\n练习:[problem:POJ-3579],[problem:POJ-3685]\n(4)其他问题\n练习:[problem:POJ-3662],[problem:POJ-1759],[problem:POJ-3484]\n8. 尺取法\n例题:[problem:POJ-3061],[problem:POJ-3320]\n练习:[problem:POJ-2566](单调性转化),[problem:POJ-2739],[problem:POJ-2100]\n9. 经典思维\n(1)相遇问题\n例题:[problem:POJ-1852],[problem:POJ-3684]\n练习:[problem:POJ-2674]\n(2)反转问题\n例题:[problem:POJ-3276],[problem:POJ-3279]\n练习:[problem:POJ-3185],[problem:POJ-1222]\n(3)折半枚举\n例题:[problem:POJ-2785]\n练习:[problem:POJ-3977],[problem:POJ-2549]\n10. 单调栈与单调队列\n(1)单调栈(最大矩形面积)\n例题:[problem:POJ-2559]\n练习:[problem:POJ-3250],[problem:POJ-2082],[problem:POJ-3494]\n(2)单调队列(滑窗问题)\n练习:[problem:POJ-2823],[problem:POJ-3260](完全背包+多重背包)\n\n中等:\n1. 数据结构进阶(线段树与树状数组)\n例题:[problem:POJ-2991],[problem:POJ-3468],[problem:POJ-2104](归并树,数据加强后分块会超时)\n练习:[problem:POJ-1990],[problem:POJ-3109](扫描线),[problem:POJ-2155](二维树状数组),[problem:POJ-2886](反素数),[problem:POJ-3264],[problem:POJ-3368],[problem:POJ-3470](扫描线)\n2. 动态规划进阶\n(1)状压dp\n例题:[problem:POJ-2686]\n练习:[problem:POJ-2441],[problem:POJ-3254],[problem:POJ-2836],[problem:POJ-1795],[problem:POJ-3411]\n(2)dp矩乘加速\n例题:[problem:POJ-3734],[problem:POJ-3233]\n练习:[problem:POJ-3420],[problem:POJ-3735]\n(3)dp优化\n例题:[problem:POJ-1769](数据结构优化),[problem:POJ-3709](斜率优化)\n练习:[problem:POJ-3171](数据结构优化),[problem:POJ-1180](斜率优化)\n3. 网络流\n(1)二分图匹配\n例题:[problem:POJ-3041],[problem:POJ-3057]\n练习:[problem:POJ-1274],[problem:POJ-2112],[problem:POJ-1486](关键边),[problem:POJ-1466](最大独立集),[problem:POJ-3692](最大团\u003d补图最大独立集),[problem:POJ-2724],[problem:POJ-2226](最小顶点覆盖)\n(2)最大流与最小割\n例题:[problem:POJ-3281],[problem:POJ-3469]\n练习:[problem:POJ-2987](最大权闭合图),[problem:POJ-2914](无向图最小割),[problem:POJ-3155](最大密度子图)\n(3)最小费用流\n例题:[problem:POJ-2135],[problem:POJ-2175](消圈算法),[problem:POJ-3686](二分图最小权指派问题),[problem:POJ-3680](负权边转化)\n练习:[problem:POJ-3068],[problem:POJ-2195](二分图最小权指派问题),[problem:POJ-3422]\n4. 图论进阶\n(1)强连通分量与缩点\n例题:[problem:POJ-2186]\n练习:[problem:POJ-3180],[problem:POJ-1236]\n(2)2-SAT\n例题:[problem:POJ-3683](输出一组可行解)\n练习:[problem:POJ-3678],[problem:POJ-2723](二分),[problem:POJ-2749](二分)\n(3)LCA\n例题:[problem:POJ-2763](RMQ)\n练习:[problem:POJ-1986],[problem:POJ-3728]\n(4)其他问题\n练习:[problem:POJ-3713](图的三连通)\n5. 基础计算几何\n暂未更新\n\n较难:\n1. 高级搜索\n暂未更新\n2. 字符串算法\n暂未更新\n3. 数学进阶\n暂未更新\n4. 博弈论\n暂未更新\n5. 分治\n暂未更新","likeCnt":18,"createTime":1541686187000,"isWorkbook":true,"viewCnt":4098,"openness":2,"fav":false,"id":726,"trustable":false}