Uva 423 - MPI Maelstrom

之前在hdu的一次小比赛中见到过

1Y

Floyd

#include<stdio.h>#define inf (int)1e9#include<algorithm>int g[110][110];int n;int main(){int n;while(scanf("%d",&n)!=EOF){int i,j,k;for(i=1;i<=n;i++)for(j=1;j<=n;j++)if(i>j){char s[100];scanf("%s",s);if(s[0]=='x')g[i][j]=g[j][i]=inf;else {int r;sscanf(s,"%d",&r);g[i][j]=g[j][i]=r;}}else if(i==j)g[i][i]=0;for(k=1;k<=n;k++)for(i=1;i<=n;i++)for(j=1;j<=n;j++){g[i][j]=std::min(g[i][j],g[i][k]+g[k][j]);}int res=0;for(i=2;i<=n;i++)res=std::max(res,g[1][i]);printf("%d\n",res);}return 0;}