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Cod sursa(job #759107)
#include <cstdio>
#include <algorithm>
using namespace std;
#define MAX 101
#define INF 0xffffff
int n,c[MAX][MAX];
void royfloyd(){
for(int k=1;k<=n;k++)
for(int i=1;i<=n;i++)
for(int j=1;j<=n;j++)
if(i!=j && i!=k)c[i][j]=min(c[i][j],c[i][k]+c[k][j]);
}
int main(){
int x;
freopen("royfloyd.in","r",stdin);
freopen("royfloyd.out","w",stdout);
scanf("%d",&n);
for(int i=1;i<=n;i++)
for(int j=1;j<=n;j++)
{
scanf("%d",&x);
c[i][j]=x==0?INF:x;
}
royfloyd();
for(int i=1;i<=n;i++){
for(int j=1;j<=n;j++)printf("%d ",c[i][j]==INF?0:c[i][j]); printf("\n"); }
return 0;
}