2016年10月15日
【POJ 2486】 Apple Tree (树形DP)
摘要： Apple Tree Description Wshxzt is a lovely girl. She likes apple very much. One day HX takes her to an apple tree. There are N nodes in the tree. Each 阅读全文
posted @ 2016-10-15 11:08 konjak魔芋 阅读(236) 评论(0) 推荐(0)