摘要：
棋盘问题 Time Limit: 1000MS Memory Limit: 10000K Total Submissions: 33559 Accepted: 16616 Description 在一个给定形状的棋盘（形状可能是不规则的）上面摆放棋子，棋子没有区别。要求摆放时任意的两个棋子不能放在棋 阅读全文
摘要：
Description Background The knight is getting bored of seeing the same black and white squares again and again and has decided to make a journey around 阅读全文