http://acm.hdu.edu.cn/showproblem.php?pid=6514
Problem Description
Xiaoteng has a large area of land for growing crops, and the land can be seen as a rectangle of n×m. But recently ...
P3128 [USACO15DEC]最大流Max Flow
题目描述
Farmer John has installed a new system of pipes to transport milk between the stalls in his barn (), conveniently numbered . Eac...