摘要：
Time Limit:1000MS Memory Limit:10000KB 64bit IO Format:%I64d & %I64u Submit Status Submit Status Description A math instructor is too lazy to grade a 阅读全文
摘要：
Description There is a rectangular room, covered with square tiles. Each tile is colored either red or black. A man is standing on a black tile. From 阅读全文
摘要：
Submit Status Submit Status Description 在N*N的方格棋盘放置了N个皇后，使得它们不相互攻击（即任意2个皇后不允许处在同一排，同一列，也不允许处在与棋盘边框成45角的斜线上。 你的任务是，对于给定的N，求出有多少种合法的放置方法。 Input 共有若干行，每行 阅读全文
摘要：
G - DFS(floodfill),推荐 Time Limit:1000MS Memory Limit:65536KB 64bit IO Format:%I64d & %I64u Submit Status G - DFS(floodfill),推荐 Submit Status Descripti 阅读全文
摘要：
Description A robot has to patrol around a rectangular area which is in a form of mxn grid (m rows and n columns). The rows are labeled from 1 to m. T 阅读全文
摘要：
Description A friend of you is doing research on the Traveling Knight Problem (TKP) where you are to find the shortest closed tour of knight moves tha 阅读全文