> if(f[path[i]][i] > 0)
>  {
>  		cf[i][path[i]] = f[path[i]][i];
>  		cf[path[i]][i] = cap[path[i]][i] - f[path[i]][i];
>  }
> 不明白这么写为什么也能ＡＣ？按最大流的思想，应该：
> cf[i][path[i]] = cap[i][path[i]]+f[path[i]][i];
？？？？？？？？？？
按照残余网络的定义是
cf[i][path[i]] = f[path[i]][i];没错啊～