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{"workbook":{"problemsBrief":"{\"POJ-1321\":[\"棋盘问题\",36438,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003d%E8%94%A1%E9%94%99%40pku\\\"\\u003e蔡错@pku\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-2531\":[\"Network Saboteur\",6392,\"\\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, Far-Eastern Subregion\\u003c/div\\u003e\"],\"POJ-1684\":[\"Dynamic Declaration Language (DDL)\",289,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dTehran+2000\\\"\\u003eTehran 2000\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-1324\":[\"Holedox Moving\",2546,\"\\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-2777\":[\"Count Color\",10521,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dPOJ+Monthly--2006.03.26\\\"\\u003ePOJ Monthly--2006.03.26\\u003c/a\\u003e,dodo\\u003c/div\\u003e\"],\"POJ-1201\":[\"Intervals\",8949,\"\\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-2411\":[\"Mondriaan\\u0027s Dream\",9630,\"\\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\"],\"POJ-2533\":[\"Longest Ordered Subsequence\",24826,\"\\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, Far-Eastern Subregion\\u003c/div\\u003e\"],\"POJ-1328\":[\"Radar Installation\",24882,\"\\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-2778\":[\"DNA Sequence\",4536,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dPOJ+Monthly--2006.03.26\\\"\\u003ePOJ Monthly--2006.03.26\\u003c/a\\u003e,dodo\\u003c/div\\u003e\"],\"POJ-3070\":[\"Fibonacci\",15775,\"\\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-3071\":[\"Football\",3535,\"\\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-1691\":[\"Painting A Board\",1582,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dTehran+1999\\\"\\u003eTehran 1999\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-1573\":[\"Robot Motion\",7112,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dMid-Central+USA+1999\\\"\\u003eMid-Central USA 1999\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-1330\":[\"Nearest Common Ancestors\",13362,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dTaejon+2002\\\"\\u003eTaejon 2002\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-2540\":[\"Hotter Colder\",1042,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dWaterloo+local+2001.01.27\\\"\\u003eWaterloo local 2001.01.27\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-1459\":[\"Power Network\",7524,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dSoutheastern+Europe+2003\\\"\\u003eSoutheastern Europe 2003\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-3080\":[\"Blue Jeans\",8245,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dSouth+Central+USA+2006\\\"\\u003eSouth Central USA 2006\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-3083\":[\"Children of the Candy Corn\",5212,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dSouth+Central+USA+2006\\\"\\u003eSouth Central USA 2006\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-3087\":[\"Shuffle\\u0027m Up\",8846,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dGreater+New+York+2006\\\"\\u003eGreater New York 2006\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-2750\":[\"Potted Flower\",1634,\"\\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,Zeyuan Zhu\\u003c/div\\u003e\"],\"POJ-2079\":[\"Triangle\",1922,\"\\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-2993\":[\"Emag eht htiw Em Pleh\",2616,\"\\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-2870\":[\"Light Up\",270,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dSouth+America+2005\\\"\\u003eSouth America 2005\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-2754\":[\"Similarity of necklaces 2\",199,\"\\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,Zeyuan Zhu\\u003c/div\\u003e\"],\"POJ-2996\":[\"Help Me with the Game\",3296,\"\\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-2513\":[\"Colored Sticks\",5694,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dThe+UofA+Local+2000.10.14\\\"\\u003eThe UofA Local 2000.10.14\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-1421\":[\"Peter\\u0027s Calculator\",70,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dSouthwestern+European+Regional+Contest+1995\\\"\\u003eSouthwestern European Regional Contest 1995\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-2632\":[\"Crashing Robots\",5097,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dNordic+2005\\\"\\u003eNordic 2005\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-2516\":[\"Minimum Cost\",4323,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dPOJ+Monthly--2005.07.31\\\"\\u003ePOJ Monthly--2005.07.31\\u003c/a\\u003e, Wang Yijie\\u003c/div\\u003e\"],\"POJ-2635\":[\"The Embarrassed Cryptographer\",2961,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dNordic+2005\\\"\\u003eNordic 2005\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-1789\":[\"Truck History\",11972,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dCTU+Open+2003\\\"\\u003eCTU Open 2003\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-1426\":[\"Find The Multiple\",19363,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dDhaka+2002\\\"\\u003eDhaka 2002\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-3292\":[\"Semi-prime H-numbers\",4498,\"\\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\",14925,\"\\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-3296\":[\"Rinse\",196,\"\\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-3295\":[\"Tautology\",5992,\"\\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-3294\":[\"Life Forms\",3088,\"\\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-3299\":[\"Humidex\",8825,\"\\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, 2007.7.14\\u003c/div\\u003e\"],\"POJ-2886\":[\"Who Gets the Most Candies?\",3448,\"\\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-2406\":[\"Power Strings\",21661,\"\\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-2528\":[\"Mayor\\u0027s posters\",14664,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dAlberta+Collegiate+Programming+Contest+2003.10.18\\\"\\u003eAlberta Collegiate Programming Contest 2003.10.18\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-2888\":[\"Magic Bracelet\",1313,\"\\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, cuiaoxiang\\u003c/div\\u003e\"],\"POJ-2525\":[\"Text Formalization\",182,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dAlberta+Collegiate+Programming+Contest+2003.10.18\\\"\\u003eAlberta Collegiate Programming Contest 2003.10.18\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-2409\":[\"Let it Bead\",4150,\"\\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\"],\"POJ-3422\":[\"Kaka\\u0027s Matrix Travels\",2811,\"\\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-3301\":[\"Texas Trip\",1416,\"\\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, 2007.7.14\\u003c/div\\u003e\"],\"POJ-2454\":[\"Jersey Politics\",1498,\"\\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-3426\":[\"Doors and... more doors\",152,\"\\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, Far-Eastern Subregion\\r\\u003cbr\\u003e\\u003c/div\\u003e\"],\"POJ-1487\":[\"Single-Player Games\",288,\"\\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-1125\":[\"Stockbroker Grapevine\",18441,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dSouthern+African+2001\\\"\\u003eSouthern African 2001\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-3429\":[\"Geometry with a ruler\",248,\"\\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, Far-Eastern Subregion\\u003c/div\\u003e\"],\"POJ-3308\":[\"Paratroopers\",1820,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dAmirkabir+University+of+Technology+Local+Contest+2006\\\"\\u003eAmirkabir University of Technology Local Contest 2006\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-1129\":[\"Channel Allocation\",7510,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dSouthern+African+2001\\\"\\u003eSouthern African 2001\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-3306\":[\"Busy Airport\",130,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dAmirkabir+University+of+Technology+Local+Contest+2006\\\"\\u003eAmirkabir University of Technology Local Contest 2006\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-1924\":[\"The Treasure\",299,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dBeijing+2004+Preliminary%40POJ\\\"\\u003eBeijing 2004 Preliminary@POJ\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-1925\":[\"Spiderman\",1026,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dBeijing+2004+Preliminary%40POJ\\\"\\u003eBeijing 2004 Preliminary@POJ\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-2586\":[\"Y2K Accounting Bug\",8960,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dWaterloo+local+2000.01.29\\\"\\u003eWaterloo local 2000.01.29\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-1258\":[\"Agri-Net\",24332,\"\\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-3436\":[\"ACM Computer Factory\",3026,\"\\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, Far-Eastern Subregion\\u003c/div\\u003e\"],\"POJ-3315\":[\"Roofing It\",94,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dEast+Central+North+America+2006\\\"\\u003eEast Central North America 2006\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-3434\":[\"Terrarium\",187,\"\\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, Far-Eastern Subregion\\u003c/div\\u003e\"],\"POJ-2109\":[\"Power of Cryptography\",12059,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dM%C3%A9xico+and+Central+America+2004\\\"\\u003eMéxico and Central America 2004\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-3318\":[\"Matrix Multiplication\",3615,\"\\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, qzc\\u003c/div\\u003e\"],\"POJ-3317\":[\"Stake Your Claim\",334,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dEast+Central+North+America+2006\\\"\\u003eEast Central North America 2006\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-1019\":[\"Number Sequence\",10411,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dTehran+2002\\\"\\u003eTehran 2002\\u003c/a\\u003e, First Iran Nationwide Internet Programming Contest\\u003c/div\\u003e\"],\"POJ-1936\":[\"All in All\",13310,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca 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2002\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-1584\":[\"A Round Peg in a Ground Hole\",1897,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dMid-Atlantic+2003\\\"\\u003eMid-Atlantic 2003\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-1222\":[\"EXTENDED LIGHTS OUT\",7827,\"\\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-1462\":[\"Random Walk\",108,\"\\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-2676\":[\"Sudoku\",10491,\"\\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-1905\":[\"Expanding Rods\",3996,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dWaterloo+local+2004.06.12\\\"\\u003eWaterloo local 2004.06.12\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-3094\":[\"Quicksum\",12245,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dMid-Central+USA+2006\\\"\\u003eMid-Central USA 2006\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-3096\":[\"Surprising Strings\",4787,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dMid-Central+USA+2006\\\"\\u003eMid-Central USA 2006\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-3411\":[\"Paid Roads\",2426,\"\\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-1475\":[\"Pushing Boxes\",2435,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dSouthwestern+European+Regional+Contest+1997\\\"\\u003eSouthwestern European Regional Contest 1997\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-1472\":[\"Instant Complexity\",843,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dSouthwestern+European+Regional+Contest+1997\\\"\\u003eSouthwestern European Regional Contest 1997\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-2446\":[\"Chessboard\",4366,\"\\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,charlescpp\\u003c/div\\u003e\"],\"POJ-3415\":[\"Common Substrings\",3055,\"\\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-1478\":[\"Island of Logic\",191,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dSouthwestern+European+Regional+Contest+1997\\\"\\u003eSouthwestern European Regional Contest 1997\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-3414\":[\"Pots\",11364,\"\\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-1113\":[\"Wall\",9263,\"\\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-1482\":[\"It\\u0027s not a Bug, It\\u0027s a Feature!\",400,\"\\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-1166\":[\"The Clocks\",6195,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dIOI+1994\\\"\\u003eIOI 1994\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-2255\":[\"Tree Recovery\",10469,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dUlm+Local+1997\\\"\\u003eUlm Local 1997\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-2253\":[\"Frogger\",17805,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dUlm+Local+1997\\\"\\u003eUlm Local 1997\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-3101\":[\"Astronomy\",966,\"\\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-1286\":[\"Necklace of Beads\",3834,\"\\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-3349\":[\"Snowflake\\r\\nSnow\\r\\nSnowflakes\",7762,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dCCC+2007\\\"\\u003eCCC 2007\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-3227\":[\"Mountains\",380,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dSouth+Central+China+2007+hosted+by+NUDT\\\"\\u003eSouth Central China 2007 hosted by NUDT\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-1961\":[\"Period\",9250,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dSoutheastern+Europe+2004\\\"\\u003eSoutheastern Europe 2004\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-1840\":[\"Eqs\",5416,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dRomania+OI+2002\\\"\\u003eRomania OI 2002\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-1048\":[\"Follow My Logic\",589,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dGreater+New+York+2001\\\"\\u003eGreater New York 2001\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-1966\":[\"Cable TV Network\",1839,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dSoutheastern+Europe+2004\\\"\\u003eSoutheastern Europe 2004\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-1724\":[\"ROADS\",4899,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dCEOI+1998\\\"\\u003eCEOI 1998\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-1845\":[\"Sumdiv\",6227,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dRomania+OI+2002\\\"\\u003eRomania OI 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-3352\":[\"Road Construction\",5474,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dCCC+2007\\\"\\u003eCCC 2007\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-2262\":[\"Goldbach\\u0027s Conjecture\",15691,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dUlm+Local+1998\\\"\\u003eUlm Local 1998\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-1177\":[\"Picture\",5108,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dIOI+1998\\\"\\u003eIOI 1998\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-2388\":[\"Who\\u0027s in the Middle\",24125,\"\\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-1054\":[\"The Troublesome Frog\",2561,\"\\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-2942\":[\"Knights of the Round Table\",2923,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dCentral+Europe+2005\\\"\\u003eCentral Europe 2005\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-2029\":[\"Get Many Persimmon Trees\",2882,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dJapan+2003+Domestic\\\"\\u003eJapan 2003 Domestic\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-1850\":[\"Code\",4647,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dRomania+OI+2002\\\"\\u003eRomania OI 2002\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-2148\":[\"Color the Map\",204,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dJapan+2004\\\"\\u003eJapan 2004\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-2823\":[\"Sliding Window\",15537,\"\\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-2828\":[\"Buy Tickets\",8834,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dPOJ+Monthly--2006.05.28\\\"\\u003ePOJ Monthly--2006.05.28\\u003c/a\\u003e, Zhu, Zeyuan\\u003c/div\\u003e\"],\"POJ-2947\":[\"Widget Factory\",1670,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dCentral+Europe+2005\\\"\\u003eCentral Europe 2005\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-2706\":[\"Connect\",482,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dMid-Central+USA+2005\\\"\\u003eMid-Central USA 2005\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-2948\":[\"Martian Mining\",1433,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dCentral+Europe+2005\\\"\\u003eCentral Europe 2005\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-1184\":[\"聪明的打字员\",1396,\"\\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-2031\":[\"Building a Space Station\",7419,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dJapan+2003+Domestic\\\"\\u003eJapan 2003 Domestic\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-1185\":[\"炮兵阵地\",10165,\"\\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-1062\":[\"昂贵的聘礼\",15100,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003d%E6%B5%99%E6%B1%9F\\\"\\u003e浙江\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-2151\":[\"Check the difficulty of problems\",3130,\"\\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,鲁小石\\u003c/div\\u003e\"],\"POJ-2112\":[\"Optimal Milking\",4538,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca 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href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dUral+Collegiate+Programming+Contest+1999\\\"\\u003eUral Collegiate Programming Contest 1999\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-1263\":[\"Reflections\",430,\"\\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-1027\":[\"The Same Game\",2089,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dEast+Central+North+America+1999\\\"\\u003eEast Central North America 1999\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-1026\":[\"Cipher\",4876,\"\\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-2115\":[\"C Looooops\",8054,\"\\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\",13461,\"\\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-1942\":[\"Paths on a Grid\",7025,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dUlm+Local+2002\\\"\\u003eUlm Local 2002\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-1947\":[\"Rebuilding Roads\",4715,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dUSACO+2002+February\\\"\\u003eUSACO 2002 February\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-2240\":[\"Arbitrage\",9950,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dUlm+Local+1996\\\"\\u003eUlm Local 1996\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-1151\":[\"Atlantis\",7191,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dMid-Central+European+Regional+Contest+2000\\\"\\u003eMid-Central European Regional Contest 2000\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-2482\":[\"Stars in Your Window\",2531,\"\\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-2002\":[\"Squares\",4995,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dRocky+Mountain+2004\\\"\\u003eRocky Mountain 2004\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-1276\":[\"Cash Machine\",12484,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dSoutheastern+Europe+2002\\\"\\u003eSoutheastern Europe 2002\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-2486\":[\"Apple Tree\",3607,\"\\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:magicpig@ZSU\\u003c/div\\u003e\"],\"POJ-1035\":[\"Spell checker\",7871,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dNortheastern+Europe+1998\\\"\\u003eNortheastern Europe 1998\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-2485\":[\"Highways\",13364,\"\\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\"],\"POJ-3216\":[\"Repairing Company\",1470,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dPOJ+Monthly--2007.04.01\\\"\\u003ePOJ Monthly--2007.04.01\\u003c/a\\u003e, crazyb0y\\u003c/div\\u003e\"],\"POJ-1159\":[\"Palindrome\",16446,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dIOI+2000\\\"\\u003eIOI 2000\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-1039\":[\"Pipe\",2862,\"\\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-2488\":[\"A Knight\\u0027s Journey\",17285,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dTUD+Programming+Contest+2005\\\"\\u003eTUD Programming Contest 2005\\u003c/a\\u003e, Darmstadt, Germany\\u003c/div\\u003e\"],\"POJ-3336\":[\"ACM Underground\",85,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dTehran+2006+Preliminary\\\"\\u003eTehran 2006 Preliminary\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-3335\":[\"Rotating Scoreboard\",2333,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dTehran+2006+Preliminary\\\"\\u003eTehran 2006 Preliminary\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-1836\":[\"Alignment\",5498,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dRomania+OI+2002\\\"\\u003eRomania OI 2002\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-1837\":[\"Balance\",9037,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dRomania+OI+2002\\\"\\u003eRomania OI 2002\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-2251\":[\"Dungeon Master\",22248,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dUlm+Local+1997\\\"\\u003eUlm Local 1997\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-2492\":[\"A Bug\\u0027s Life\",12095,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dTUD+Programming+Contest+2005\\\"\\u003eTUD Programming Contest 2005\\u003c/a\\u003e, Darmstadt, Germany\\u003c/div\\u003e\"],\"POJ-3267\":[\"The Cow Lexicon\",4239,\"\\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-2299\":[\"Ultra-QuickSort\",22474,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dWaterloo+local+2005.02.05\\\"\\u003eWaterloo local 2005.02.05\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-2057\":[\"The Lost House\",989,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dBeijing+2004\\\"\\u003eBeijing 2004\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-3026\":[\"Borg Maze\",4961,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dSvenskt+M%C3%A4sterskap+i+Programmering%2FNorgesmesterskapet+2001\\\"\\u003eSvenskt Mästerskap i Programmering/Norgesmesterskapet 2001\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-1087\":[\"A Plug for UNIX\",5173,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dEast+Central+North+America+1999\\\"\\u003eEast Central North America 1999\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-1765\":[\"November Rain\",340,\"\\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-1768\":[\"Hang or not to hang\",150,\"\\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\",6736,\"\\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-1408\":[\"Fishnet\",1399,\"\\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-2739\":[\"Sum of Consecutive Prime Numbers\",15364,\"\\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-3270\":[\"Cow Sorting\",2688,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dUSACO+2007+February+Gold\\\"\\u003eUSACO 2007 February Gold\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-3150\":[\"Cellular Automaton\",1085,\"\\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-3274\":[\"Gold Balanced Lineup\",2776,\"\\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-2186\":[\"Popular Cows\",11835,\"\\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-2065\":[\"SETI\",1134,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dNorthwestern+Europe+2004\\\"\\u003eNorthwestern Europe 2004\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-1094\":[\"Sorting It All Out\",11047,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dEast+Central+North+America+2001\\\"\\u003eEast Central North America 2001\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-3273\":[\"Monthly Expense\",12037,\"\\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-3393\":[\"Lucky and Good Months by Gregorian Calendar\",690,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dKaohsiung+2006\\\"\\u003eKaohsiung 2006\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-1095\":[\"Trees Made to Order\",3619,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dEast+Central+North+America+2001\\\"\\u003eEast Central North America 2001\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-3278\":[\"Catch That Cow\",40634,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca 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Eight-Puzzle\",302,\"\\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-3373\":[\"Changing Digits\",897,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dPOJ+Monthly--2007.09.09\\\"\\u003ePOJ Monthly--2007.09.09\\u003c/a\\u003e, Rainer\\u003c/div\\u003e\"],\"POJ-3253\":[\"Fence Repair\",21366,\"\\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-2043\":[\"Area of Polygons\",268,\"\\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-3371\":[\"Flesch Reading Ease\",606,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dPOJ+Monthly--2007.09.09\\\"\\u003ePOJ Monthly--2007.09.09\\u003c/a\\u003e, frkstyc\\u003c/div\\u003e\"],\"POJ-3130\":[\"How I Mathematician Wonder What You Are!\",1804,\"\\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-3378\":[\"Crazy Thairs\",1216,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dPOJ+Monthly--2007.09.09\\\"\\u003ePOJ Monthly--2007.09.09\\u003c/a\\u003e, tdzl2003\\u003c/div\\u003e\"],\"POJ-1870\":[\"Bee Breeding\",606,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dWorld+Finals+1999\\\"\\u003eWorld Finals 1999\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-2046\":[\"Gap\",528,\"\\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-2289\":[\"Jamie\\u0027s Contact Groups\",2015,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dShanghai+2004\\\"\\u003eShanghai 2004\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-2286\":[\"The Rotation Game\",1676,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dShanghai+2004\\\"\\u003eShanghai 2004\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-3133\":[\"Manhattan Wiring\",712,\"\\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-2165\":[\"Gunman\",354,\"\\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\\u003c/div\\u003e\"],\"POJ-3254\":[\"Corn Fields\",9833,\"\\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-1753\":[\"Flip Game\",18972,\"\\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-3258\":[\"River Hopscotch\",9623,\"\\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-1872\":[\"A Dicey Problem\",243,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dWorld+Finals+1999\\\"\\u003eWorld Finals 1999\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-2048\":[\"Monster Trap\",155,\"\\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-3259\":[\"Wormholes\",19764,\"\\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-3017\":[\"Cut the Sequence\",2507,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dPOJ+Monthly--2006.09.29\\\"\\u003ePOJ Monthly--2006.09.29\\u003c/a\\u003e, zhucheng\\u003c/div\\u003e\"],\"POJ-2049\":[\"Finding Nemo\",2593,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dBeijing+2004\\\"\\u003eBeijing 2004\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-2965\":[\"The Pilots Brothers\\u0027 refrigerator\",10086,\"\\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, Western Subregion\\u003c/div\\u003e\"],\"POJ-2966\":[\"A safe way\",186,\"\\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, Western Subregion\\u003c/div\\u003e\"],\"POJ-2729\":[\"Robocode\",236,\"\\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-1639\":[\"Picnic Planning\",2383,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dEast+Central+North+America+2000\\\"\\u003eEast Central North America 2000\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-2728\":[\"Desert King\",4568,\"\\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-2050\":[\"Searching the Web\",297,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dBeijing+2004\\\"\\u003eBeijing 2004\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-1080\":[\"Human Gene Functions\",10329,\"\\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-1085\":[\"Triangle War\",897,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dEast+Central+North+America+1999\\\"\\u003eEast Central North America 1999\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-3264\":[\"Balanced Lineup\",23842,\"\\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-3384\":[\"Feng Shui\",1311,\"\\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, Northern Subregion\\u003c/div\\u003e\"],\"POJ-1083\":[\"Moving Tables\",11087,\"\\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-3140\":[\"Contestants Division\",2588,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dShanghai+2006\\\"\\u003eShanghai 2006\\u003c/a\\u003e\\u003c/div\\u003e\"],\"POJ-3020\":[\"Antenna Placement\",4983,\"\\u003cdiv class\\u003d\\\"ptx\\\" lang\\u003d\\\"en-US\\\"\\u003e\\u003ca href\\u003d\\\"http://poj.org/searchproblem?field\\u003dsource\\u0026amp;key\\u003dSvenskt+M%C3%A4sterskap+i+Programmering%2FNorgesmesterskapet+2001\\\"\\u003eSvenskt Mästerskap i Programmering/Norgesmesterskapet 2001\\u003c/a\\u003e\\u003c/div\\u003e\"]}","joined":false,"groups":{}},"managingGroups":{},"author":"Isun","updateTime":1714543892000,"title":"POJ题目分类推荐 （很好很有层次感）","dislikeCnt":2,"content":"著名题单，最初来源不详。直接来源：http://blog.csdn.net/a1dark/article/details/11714009\n\n----\nOJ上的一些水题(可用来练手和增加自信) ([problem:POJ-3299],[problem:POJ-2159],[problem:POJ-2739],[problem:POJ-1083],[problem:POJ-2262],[problem:POJ-1503],[problem:POJ-3006],[problem:POJ-2255],[problem:POJ-3094])\n\n--- \n### 初期:\n\n##### 一.基本算法:\n###### 1. 枚举. ([problem:POJ-1753],[problem:POJ-2965]) \n###### 2. 贪心([problem:POJ-1328],[problem:POJ-2109],[problem:POJ-2586]) \n###### 3. 递归和分治法. \n###### 4. 递推. \n###### 5. 构造法.([problem:POJ-3295]) \n###### 6. 模拟法.([problem:POJ-1068],[problem:POJ-2632],[problem:POJ-1573],[problem:POJ-2993],[problem:POJ-2996]) \n\n##### 二.图算法: \n###### 1. 图的深度优先遍历和广度优先遍历. \n###### 2. 最短路径算法\n(dijkstra,bellman-ford,floyd,heap+dijkstra) ([problem:POJ-1860],[problem:POJ-3259],[problem:POJ-1062],[problem:POJ-2253],[problem:POJ-1125],[problem:POJ-2240]) \n###### 3. 最小生成树算法\n(prim,kruskal) ([problem:POJ-1789],[problem:POJ-2485],[problem:POJ-1258],[problem:POJ-3026]) \n###### 4. 拓扑排序 ([problem:POJ-1094]) \n###### 5. 二分图的最大匹配 (匈牙利算法) ([problem:POJ-3041],[problem:POJ-3020]) \n###### 6. 最大流的增广路算法(KM算法). ([problem:POJ-1459],[problem:POJ-3436]) \n\n##### 三.数据结构. \n###### 1. 串 ([problem:POJ-1035],[problem:POJ-3080],[problem:POJ-1936]) \n###### 2. 排序\n(快排、归并排(与逆序数有关)、堆排) ([problem:POJ-2388],[problem:POJ-2299]) \n###### 3. 简单并查集的应用. \n###### 4. 哈希表和二分查找\n高效查找法(数的Hash,串的Hash) ([problem:POJ-3349],[problem:POJ-3274],[problem:POJ-2151],[problem:POJ-1840],[problem:POJ-2002],[problem:POJ-2503]) \n###### 5. 哈夫曼树([problem:POJ-3253]) \n###### 6. 堆 \n###### 7. trie树(静态建树、动态建树) ([problem:POJ-2513]) \n\n##### 四.简单搜索 \n###### 1. 深度优先搜索 ([problem:POJ-2488],[problem:POJ-3083],[problem:POJ-3009],[problem:POJ-1321],[problem:POJ-2251]) \n###### 2. 广度优先搜索([problem:POJ-3278],[problem:POJ-1426],[problem:POJ-3126],[problem:POJ-3087].[problem:POJ-3414]) \n###### 3. 简单搜索技巧和剪枝([problem:POJ-2531],[problem:POJ-1416],[problem:POJ-2676],[problem:POJ-1129]) \n\n##### 五.动态规划 \n###### 1. 背包问题.\n([problem:POJ-1837],[problem:POJ-1276]) \n###### 2. 型如下表的简单DP\n(可参考lrj的书 page149): \n - E[j]\u003dopt{D+w(i,j)} ([problem:POJ-3267],[problem:POJ-1836],[problem:POJ-1260],[problem:POJ-2533]) \n - E[i,j]\u003dopt{D[i-1,j]+xi,D[i,j-1]+yj,D[i-1][j-1]+zij} (最长公共子序列) ([problem:POJ-3176],[problem:POJ-1080],[problem:POJ-1159]) \n - C[i,j]\u003dw[i,j]+opt{C[i,k-1]+C[k,j]}.(最优二分检索树问题) \n\n##### 六.数学 \n###### 1. 组合数学:\n - 加法原理和乘法原理. \n - 排列组合. \n - 递推关系. \n - ([problem:POJ-3252],[problem:POJ-1850],[problem:POJ-1019],[problem:POJ-1942]) \n\n###### 2. 数论. \n - 素数与整除问题 \n - 进制位. \n - 同余模运算. \n - ([problem:POJ-2635], [problem:POJ-3292],[problem:POJ-1845],[problem:POJ-2115]) \n\n###### 3. 计算方法. \n - 二分法求解单调函数相关知识.([problem:POJ-3273],[problem:POJ-3258],[problem:POJ-1905],[problem:POJ-3122]) \n\n##### 七.计算几何学. \n###### 1. 几何公式. \n###### 2. 叉积和点积的运用\n(如线段相交的判定,点到线段的距离等). ([problem:POJ-2031],[problem:POJ-1039])\n###### 3. 多边型的简单算法(求面积)\n和相关判定(点在多边型内,多边型是否相交) ([problem:POJ-1408],[problem:POJ-1584]) \n###### 4. 凸包. ([problem:POJ-2187],[problem:POJ-1113])\n\n--- \n### 中级:\n\n##### 一.基本算法: \n###### 1. C++的标准模版库的应用.\n([problem:POJ-3096],[problem:POJ-3007]) \n###### 2. 较为复杂的模拟题的训练\n([problem:POJ-3393],[problem:POJ-1472],[problem:POJ-3371],[problem:POJ-1027],[problem:POJ-2706]) \n\n##### 二.图算法: \n###### 1. 差分约束系统的建立和求解. ([problem:POJ-1201],[problem:POJ-2983]) \n###### 2. 最小费用最大流([problem:POJ-2516],[problem:POJ-2195]) \n###### 3. 双连通分量([problem:POJ-2942]) \n###### 4. 强连通分支及其缩点.([problem:POJ-2186]) \n###### 5. 图的割边和割点([problem:POJ-3352]) \n###### 6. 最小割模型、网络流规约([problem:POJ-3308]) \n\n##### 三.数据结构. \n###### 1. 线段树. ([problem:POJ-2528],[problem:POJ-2828],[problem:POJ-2777],[problem:POJ-2886],[problem:POJ-2750]) \n###### 2. 静态二叉检索树. ([problem:POJ-2482],[problem:POJ-2352]) \n###### 3. 树状树组([problem:POJ-1195],[problem:POJ-3321]) \n###### 4. RMQ. ([problem:POJ-3264],[problem:POJ-3368]) \n###### 5. 并查集的高级应用. ([problem:POJ-1703],[problem:POJ-2492]) \n###### 6. KMP算法. ([problem:POJ-1961],[problem:POJ-2406]) \n\n##### 四.搜索 \n###### 1. 最优化剪枝和可行性剪枝 \n###### 2. 搜索的技巧和优化 ([problem:POJ-3411],[problem:POJ-1724]) \n###### 3. 记忆化搜索([problem:POJ-3373],[problem:POJ-1691]) \n\n##### 五.动态规划 \n###### 1. 较为复杂的动态规划\n(如动态规划解特别的施行商问题等) ([problem:POJ-1191],[problem:POJ-1054],[problem:POJ-3280],[problem:POJ-2029],[problem:POJ-2948],[problem:POJ-1925],[problem:POJ-3034]) \n###### 2. 记录状态的动态规划. ([problem:POJ-3254],[problem:POJ-2411],[problem:POJ-1185]) \n###### 3. 树型动态规划([problem:POJ-2057],[problem:POJ-1947],[problem:POJ-2486],[problem:POJ-3140]) \n\n##### 六.数学 \n###### 1. 组合数学: \n - 容斥原理. \n - 抽屉原理. \n - 置换群与Polya定理([problem:POJ-1286],[problem:POJ-2409],[problem:POJ-3270],[problem:POJ-1026]). \n - 递推关系和母函数. \n\n###### 2. 数学. \n - 高斯消元法([problem:POJ-2947],[problem:POJ-1487],[problem:POJ-2065],[problem:POJ-1166],[problem:POJ-1222]) \n - 概率问题. ([problem:POJ-3071],[problem:POJ-3440]) \n - GCD、扩展的欧几里德(中国剩余定理) ([problem:POJ-3101]) \n\n###### 3. 计算方法. \n - 0/1分数规划. ([problem:POJ-2976]) \n - 三分法求解单峰(单谷)的极值. \n - 矩阵法([problem:POJ-3150],[problem:POJ-3422],[problem:POJ-3070]) \n - 迭代逼近([problem:POJ-3301]) \n\n###### 4. 随机化算法([problem:POJ-3318],[problem:POJ-2454]) \n\n###### 5. 杂题. ([problem:POJ-1870],[problem:POJ-3296],[problem:POJ-3286],[problem:POJ-1095]) \n\n##### 七.计算几何学. \n###### 1. 坐标离散化. \n###### 2. 扫描线算法\n(例如求矩形的面积和周长并,常和线段树或堆一起使用). ([problem:POJ-1765],[problem:POJ-1177],[problem:POJ-1151],[problem:POJ-3277],[problem:POJ-2280],[problem:POJ-3004]) \n###### 3. 多边形的内核(半平面交)([problem:POJ-3130],[problem:POJ-3335]) \n###### 4. 几何工具的综合应用.([problem:POJ-1819],[problem:POJ-1066],[problem:POJ-2043],[problem:POJ-3227],[problem:POJ-2165],[problem:POJ-3429])\n\n---\n### 高级: \n##### 一.基本算法要求: \n###### 1. 代码快速写成,精简但不失风格 ([problem:POJ-2525],[problem:POJ-1684],[problem:POJ-1421],[problem:POJ-1048],[problem:POJ-2050],[problem:POJ-3306]) \n###### 2. 保证正确性和高效性. [problem:POJ-3434] \n##### 二.图算法: \n###### 1. 度限制最小生成树和第K最短路. ([problem:POJ-1639]) \n###### 2. 最短路,最小生成树,二分图,最大流问题\n相关理论(主要是模型建立和求解) ([problem:POJ-3155], [problem:POJ-2112],[problem:POJ-1966],[problem:POJ-3281],[problem:POJ-1087],[problem:POJ-2289],[problem:POJ-3216],[problem:POJ-2446] )\n###### 3. 最优比率生成树. ([problem:POJ-2728]) \n###### 4. 最小树形图([problem:POJ-3164]) \n###### 5. 次小生成树. \n###### 6. 无向图、有向图的最小环 \n\n##### 三.数据结构. \n###### 1. trie图的建立和应用. ([problem:POJ-2778]) \n###### 2. LCA和RMQ问题\n(LCA(最近公共祖先问题) 有离线算法(并查集+dfs) 和 在线算法\n (RMQ+dfs)).([problem:POJ-1330]) \n###### 3. 双端队列和它的应用\n(维护一个单调的队列,常常在动态规划中起到优化状态转移\n的目的). ([problem:POJ-2823]) \n###### 4. 左偏树(可合并堆). \n###### 5. 后缀树\n(非常有用的数据结构,也是赛区考题的热点). ([problem:POJ-3415],[problem:POJ-3294]) \n\n##### 四.搜索 \n###### 1. 较麻烦的搜索题目训练([problem:POJ-1069],[problem:POJ-3322],[problem:POJ-1475],[problem:POJ-1924],[problem:POJ-2049],[problem:POJ-3426])\n###### 2. 广搜的状态优化:\n利用M进制数存储状态、转化为串用hash表判重、按位压缩存储\n状态、双向广搜、A\\*算法. ([problem:POJ-1768],[problem:POJ-1184],[problem:POJ-1872],[problem:POJ-1324],[problem:POJ-2046],[problem:POJ-1482]) \n###### 3. 深搜的优化:\n尽量用位运算、一定要加剪枝、函数参数尽可能少、层数不易过大\n、可以考虑双向搜索或者是轮换搜索、IDA*算法. ([problem:POJ-3131],[problem:POJ-2870],[problem:POJ-2286]) \n\n##### 五.动态规划 \n###### 1. 需要用数据结构优化的动态规划. ([problem:POJ-2754],[problem:POJ-3378],[problem:POJ-3017]) \n###### 2. 四边形不等式理论. \n###### 3. 较难的状态DP([problem:POJ-3133]) \n\n##### 六.数学 \n###### 1. 组合数学. \n - MoBius反演([problem:POJ-2888],[problem:POJ-2154]) \n - 偏序关系理论. \n\n###### 2. 博奕论. \n - 极大极小过程([problem:POJ-3317],[problem:POJ-1085]) \n - Nim问题. \n\n##### 七.计算几何学. \n###### 1. 半平面求交([problem:POJ-3384],[problem:POJ-2540]) \n###### 2. 可视图的建立([problem:POJ-2966]) \n###### 3. 点集最小圆覆盖. \n###### 4. 对踵点([problem:POJ-2079]) \n\n##### 八.综合题. \n([problem:POJ-3109],[problem:POJ-1478],[problem:POJ-1462],[problem:POJ-2729],[problem:POJ-2048],[problem:POJ-3336],[problem:POJ-3315],[problem:POJ-2148],[problem:POJ-1263])\n","threadId":12300,"likeCnt":555,"createTime":1482412751000,"isWorkbook":true,"viewCnt":84469,"openness":2,"fav":false,"id":6,"trustable":true}
