2017年10月30日
Codeforces Round #302 B. Destroying Roads
摘要： Description In some country there are exactly n cities and m bidirectional roads connecting the cities. Cities are numbered with integers from 1 to n. 阅读全文
posted @ 2017-10-30 22:39 Hxymmm 阅读(158) 评论(0) 推荐(0) 编辑