2017年7月19日
Section1.1-4 Broken Necklace
摘要： Broken Necklace You have a necklace of N red, white, or blue beads (3<=N<=350) some of which are red, others blue, and others white, arranged at rando 阅读全文
posted @ 2017-07-19 21:32 小蒟蒻 阅读(117) 评论(0) 推荐(0)