摘要：
题目链接：http://poj.org/problem?id=1258 Description Farmer John has been elected mayor of his town! One of his campaign promises was to bring internet con 阅读全文
摘要：
题目链接：http://poj.org/problem?id=2377 Description Bessie has been hired to build a cheap internet network among Farmer John's N (2 <= N <= 1,000) barns 阅读全文