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NC245342. Petya and Pipes

描述

有一个 n 个点的图

输入一个矩阵 c

其中如果 ,表示 ij 有一条容量为 的边, 总是

你有 k 元钱,每花 1 元钱可以使得一条边已有容量 ( 你不能新建边 )

问从 1n 最大流量是多少

输入描述

第一行两个整数

接下来n行每行n个整数表示矩阵

输出描述

一个整数,表示答案。

示例1

输入:

5 7
0 1 0 2 0
0 0 4 10 0
0 0 0 0 5
0 0 0 0 10
0 0 0 0 0

输出:

10

示例2

输入:

5 10
0 1 0 0 0
0 0 2 0 0
0 0 0 3 0
0 0 0 0 4
100 0 0 0 0

输出:

5

原站题解

import java.util.Scanner;
public class Main {
public static void main(String[] arg) {
Scanner scanner = new Scanner(System.in);
// todo
}
}
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