mirror of
https://github.com/Kiritow/OJ-Problems-Source.git
synced 2024-03-22 13:11:29 +08:00
41 lines
973 B
C++
41 lines
973 B
C++
#include<stdio.h>
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#define INF 99999999
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int n,dis[15][15];
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int mark[15];
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void Floyed(){
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int i,j,k;
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for(k=0;k<n;k++)
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for(i=0;i<n;i++)
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for(j=0;j<n;j++)
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if(dis[i][j]>dis[i][k]+dis[k][j])
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dis[i][j]=dis[i][k]+dis[k][j];
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}
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int main(){
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while(scanf("%d",&n)!=EOF){
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int i,j;
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for(i=0;i<n;i++)
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for(j=0;j<n;j++)
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if(i==j)
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dis[i][j]=0;
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else
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dis[i][j]=INF;
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int m;
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int s,l;
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for(i=0;i<n;i++){
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scanf("%d%d",&m,&mark[i]);
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for(j=0;j<m;j++){
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scanf("%d%d",&s,&l);
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dis[i][s]=l;
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}
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}
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Floyed();
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int min=INF;
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for(i=0;i<n;i++)
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if(mark[i])
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if(min>dis[0][i])
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min=dis[0][i];
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printf("%d\n",min);
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}
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return 0;
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}
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