标签:style blog color os io for div amp
#include<iostream> #include<cstdio> #include<cstring> #include<queue> #include<algorithm> using namespace std; int pre[500],flow[500][500],dis[500]; int map[500][500]; int maxflow; int n,m; int ek(int begin ,int end) { int i,x; maxflow=0; queue<int>p; while(!p.empty()) { p.pop(); } memset(flow,0,sizeof(flow)); while(1) { memset(dis,0,sizeof(dis)); dis[begin]=9999999; p.push(begin); while(!p.empty()) { x=p.front(); p.pop(); for(i=1; i<=m; i++) { if(map[x][i]>flow[x][i]&&!dis[i]) { p.push(i); pre[i]=x; dis[i]=min(dis[x],map[x][i]-flow[x][i]); } } } if(dis[end]==0) { return maxflow; } for(i=end; i!=begin; i=pre[i]) { flow[pre[i]][i]+=dis[end]; flow[i][pre[i]]-=dis[end]; } maxflow+=dis[end]; } } int main() { int i,u,v,w; while(scanf("%d%d",&n,&m)!=EOF) { memset(map,0,sizeof(map)); memset(pre,0,sizeof(pre)); for(i=1; i<=n; i++) { scanf("%d%d%d",&u,&v,&w); map[u][v]+=w; } printf("%d\n",ek(1,m)); } return 0; }
标签:style blog color os io for div amp
原文地址:http://www.cnblogs.com/yangyongqian/p/3919890.html