2014年2月26日
TOJ 4008 The Leaf Eaters(容斥定理)
摘要： Description As we all know caterpillars love to eat leaves. Usually, a caterpillar sits on leaf, eats as much of it as it can (or wants), then stretch... 阅读全文
posted @ 2014-02-26 14:25 chen2013 阅读(417) 评论(0) 推荐(0)
TOJ 1883 Domino Effect
摘要： DescriptionDid you know that you can use domino bones for other things besides playing Dominoes? Take a number of dominoes and build a row by standing... 阅读全文
posted @ 2014-02-26 13:47 chen2013 阅读(253) 评论(0) 推荐(0)