翻纸牌游戏 Time Limit: 9000/3000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others) Problem Description 有一种纸牌游戏,很有意思,给你N张纸牌,一字排开,纸牌有正反两面,开始的纸牌可能是一种乱的状态(有些朝正,有些朝反),现在你需要整理这些纸牌.但是麻烦的是,每当你翻一张纸牌(由正翻到反,或者有反翻到正)时,他左右两张纸牌(最左边和最右边的纸牌,只会影响附近一张)也必须跟着翻动,现…
Catch him Time Limit: 5000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 444 Accepted Submission(s): 204 Problem Description 在美式足球中,四分卫负责指挥整只球队的进攻战术和跑位,以及给接球员传球的任务.四分卫是一只球队进攻组最重要的球员,而且一般身体都相对比较弱小,所以通常球队会安排…
Leo has a grid with N rows and M columns. All cells are painted with either black or white initially. Two cells A and B are called connected if they share an edge and they are in the same color, or there exists a cell C connected to both A and B. Leo…