摘要：Kaka's Matrix Travels Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 9153 Accepted: 3696 Description On an N × N chessboard with a non-neg 阅读全文

摘要：Going Home Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 21010 Accepted: 10614 Description On a grid map there are n little men and n hou 阅读全文

摘要："Shortest" pair of paths Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 1215 Accepted: 491 Description A chemical company has an unusual s 阅读全文