2015年12月25日
UVA 557 Burger 排列组合递推
摘要： When Mr. and Mrs. Clinton's twin sons Ben and Bill had their tenth birthday, the party was held at the McDonald's restaurant at South Broadway 202, Ne... 阅读全文
posted @ 2015-12-25 14:38 meekyan 阅读(457) 评论(0) 推荐(0)
UVA 11181 dfs 概率
摘要： N friends go to the local super market together. The probability of their buying something from themarket is p1, p2, p3, . . . , pN respectively. Afte... 阅读全文
posted @ 2015-12-25 13:26 meekyan 阅读(183) 评论(0) 推荐(0)