2013年12月6日
Greedy Gift Givers
摘要： Greedy Gift Givers A group of NP (2 ≤ NP ≤ 10) uniquely named friends has decided to exchange gifts of money. Each of these friends might or might not 阅读全文
posted @ 2013-12-06 16:08 lzyer 阅读(333) 评论(0) 推荐(0) 编辑