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1797 这个为什么WA了N次#include<iostream>
#include<string>
using namespace std;
#define MAX_S 1005
int road[MAX_S][MAX_S];
int cost[MAX_S];
int res,m,n;//所要的返回值,叉路口,道路
void Prim()
{
int i,j,max,k;
res=INT_MAX;
for(i=1;i<=m;++i)
cost[i]=road[1][i];
for(i=1;i<m;++i)//找m-1条边
{
max=0;
for(j=2;j<=m;++j)
{
if(cost[j]>max)
max=cost[j],k=j;
}
cost[k]=-1;
res=res<max?res:max;
if(i==m-1) break;//结束时
for(j=2;j<=m;++j)
{
if(cost[j]!=-1&&road[k][j]>cost[j])
cost[j]=road[k][j];
}
}
}
int main()
{
int t,i,j,k;
cin>>t;
for(k=1;k<=t;++k)
{
cin>>m>>n;
memset(road,0,sizeof(road));
for(i=1;i<=n;++i)
{
int a,b,c;
scanf("%d%d%d",&a,&b,&c);
road[b][a]+=c;
road[a][b]+=c;
}
Prim();
printf("Scenario #%d:\n%d\n\n",k,res);
}
}
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