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POJ - 3237
{"accepted":false,"attempted":false,"problemId":19890,"isFav":false,"properties":[{"title":"Time limit","content":"5000 ms","spoiler":false},{"title":"Mem limit","content":"131072 kB","spoiler":false},{"title":"Source","content":"\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, Lei, Tao\u003c/div\u003e","spoiler":true}],"submitMethods":[true,true,true],"status":0,"statistics":[["Users","\u003cspan title\u003d\u0027Local\u0027\u003e802 / 920\u003c/span\u003e"],["","\u003cspan title\u003d\u0027Remote\u0027\u003e1297 / 1647\u003c/span\u003e"],["Submissions","\u003cspan title\u003d\u0027Remote\u0027\u003e4102 / 16343\u003c/span\u003e"]]}