2017年5月8日
hdu 2196（Computer 树形dp）
摘要： A school bought the first computer some time ago(so this computer’s id is 1). During the recent years the school bought N-1 new computers. Eac... 阅读全文
posted @ 2017-05-08 20:42 xushukui 阅读(131) 评论(0) 推荐(0) 编辑