摘要：
Mahmoud and Ehab live in a country with n cities numbered from 1 to n and connected by n - 1 undirected roads. It's guaranteed that you can reach any 阅读全文
posted @ 2017-02-09 23:42
perplex
阅读(271)
评论(0)
推荐(0)
摘要：
Mahmoud wants to write a new dictionary that contains n words and relations between them. There are two types of relations: synonymy (i. e. the two wo 阅读全文
posted @ 2017-02-09 23:36
perplex
阅读(431)
评论(0)
推荐(0)
摘要：
Mahmoud wrote a message s of length n. He wants to send it as a birthday present to his friend Moaz who likes strings. He wrote it on a magical paper 阅读全文
posted @ 2017-02-09 23:30
perplex
阅读(325)
评论(0)
推荐(0)
浙公网安备 33010602011771号