摘要：Flip Game Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 59468 Accepted: 24750 Description Flip game is played on a rectangular 4x4 field 阅读全文

摘要：Your input is a series of rectangles, one per line. Each rectangle is specified as two points(X,Y) that specify the opposite corners of a rectangle. A 阅读全文

摘要：Anton has a positive integer nn, however, it quite looks like a mess, so he wants to make it beautiful after kk swaps of digits. Let the decimal repre 阅读全文