HDU 3687 Labeling Balls(逆向拓扑)
摘要:
Labeling BallsDescriptionWindy has N balls of distinct weights from 1 unit to N units. Now he tries to label them with 1 to N in such a way that:No tw... 阅读全文
posted @ 2015-08-14 17:41 焰 阅读(169) 评论(0) 推荐(0) 编辑