グラフグラフグラフの最大ストリーム実装

/************************************************************************/
/*						           MaxFlow solve graph cut program                                                            */
/************************************************************************/
/*
File description:
This program for graph cut based on Ford - Fulkerson Algorithm.
Input: 
	M(edge number) N(node number)
	then M lines input 3 parameters each line:
		start_point end_point edge_capacity
	e.g 5 4 1 4 40 1 2 20 2 4 10 4 3 30 3 2 10
output:
	Line 1:maxflow value
	Line2:nodes in Class 1
	e.g 
	MAX Flow is 50
	nodes in class S: 1 2
=========================================================================
CreateTime:2011-8-8
Author:@Zhang Ruiqing
*/
#include
#include
using namespace std;
#define N 250//point
#define M 250*250//edge
#define INF 1000000000
#define min(a,b) aQ;

int n,m,s,t;

void init(int s)
{
	memset(pre,0,sizeof(pre));
	for(int i=0;i<=n;i++)
		minlen[i]=pathmin[i]=INF;
	minlen[s]=0;
}

bool bfs(int s,int t)
{
	init(s);
	//push start node
	Q.push(s);
	while(!Q.empty())
	{
		int now=Q.front();
		Q.pop();
		for(int i=1;i<=n;i++)
		{
			if(map[now][i]!=0&&minlen[now]+map[now][i]>a>>b>>c;
			map[a][b]+=c;
		}
		s=1;
		t=n;
		cout<