标签:des style http color io os java ar for
2 3 1 2 1 2 2 1 3 3 1 1 1 3 3 2 2 2 1 1 1 1
1 3 1
好吧。。水一发
#include <stdio.h> #include <string.h> #include <math.h> #include <stdlib.h> #include <iostream> #include <algorithm> #include <vector> #include <stack> using namespace std; bool ma[1002][1002]; int main() { int n,m; while(~scanf("%d%d",&n,&m)) { int u,v; memset(ma,0,sizeof(ma)); int ans=m; for(int i=1;i<=m;i++) { scanf("%d%d",&u,&v); if(!ma[u][v]) ma[u][v]=ma[v][u]=1; else ans--; } printf("%d\n",ans); } return 0; }
标签:des style http color io os java ar for
原文地址:http://blog.csdn.net/qq_16255321/article/details/39228475