2018年5月12日
Codeforces 977D Divide by three, multiply by two（拓扑排序）
摘要： Polycarp likes to play with numbers. He takes some integer number xx, writes it down on the board, and then performs with it n−1n−1operations of the t 阅读全文
posted @ 2018-05-12 17:14 wrjlinkkkkkk 阅读(243) 评论(0) 推荐(0)
Codeforces 977B Two-gram（stl之string掉进坑）
摘要： Two-gram is an ordered pair (i.e. string of length two) of capital Latin letters. For example, "AZ", "AA", "ZA" — three distinct two-grams. You are gi 阅读全文
posted @ 2018-05-12 16:08 wrjlinkkkkkk 阅读(510) 评论(0) 推荐(0)