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Cod sursa(job #763386)
#include <cstdio>
#include <algorithm>
using namespace std;
#define MAX 101
#define INF 0xffffff
int n,c[MAX][MAX];
void RoyFloyd(){
for(int i=1;i<=n;i++)
for(int j=1;j<=n;j++)
if(c[i][j]==0)c[i][j]=INF;
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 && j!=k)c[i][j]=min(c[i][j],c[i][k]+c[k][j]);
}
int main(){
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",&c[i][j]);
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;
}