TZOJ 3522 Checker Challenge(深搜)
摘要:
描述 Examine the 6x6 checkerboard below and note that the six checkers are arranged on the board so that one and only one is placed in each row and each 阅读全文
posted @ 2019-10-11 10:45 大桃桃 阅读(140) 评论(0) 推荐(0) 编辑