ZOJ 3696 Alien's Organ（泊松定理，期望值）
摘要：
There's an alien whose name is Marjar. It is an universal solder came from planet Highrich a long time ago. Marjar is a strange alien. It needs to gen 阅读全文
posted @ 2017-04-06 23:35 Yxter 阅读(321) 评论(0) 推荐(0) 编辑
