当前没有测试数据。

Background

Description

P3386 二分图最大匹配 https://www.luogu.com.cn/problem/P3386

P1525 [NOIP2010 提高组] 关押罪犯https://www.luogu.com.cn/problem/P1525

POJ 1466Girls and Boys http://poj.org/problem?id=1466

POJ 1325 Machine Schedule http://poj.org/problem?id=1325

Format

Input

Output

Samples

1

1

Limitation

1s, 1024KiB for each test case.