Avarice_Zhao

摘要： 题目描述 [USACO11JAN]Roads and Planes G 题面翻译 题面描述 Farmer John 正在一个新的销售区域对他的牛奶销售方案进行调查。他想把牛奶送到 $T$ 个城镇 ( $1 \le T \le 25,000$ )，编号为 $1$ 到 $T$ 。这些城镇之间通过 $R$ 阅读全文

摘要： 题目描述 [USACO08JAN]Telephone Lines S 题目描述 Farmer John wants to set up a telephone line at his farm. Unfortunately, the phone company is uncooperative, s 阅读全文