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Cod sursa(job #895810)
#include<cstdio>
using namespace std;
int n,a[100][100];
int main()
{
freopen("royfloyd.in","r",stdin);
freopen("royfloyd.out","w",stdout);
scanf("%d\n",&n);
for(int i=0;i<n;i++)
{
for(int j=0;j<n;j++)
scanf("%d ",&a[i][j]);
scanf("\n");
}
for(int k=0;k<n;k++)
for(int i=0;i<n;i++)
for(int j=0;j<n;j++)
if(a[i][k]&&a[k][j]&&(a[i][j]>a[i][k]+a[k][j]||!a[i][j])&&i!=j) a[i][j]=a[i][k]+a[k][j];
for(int i=0;i<n;i++)
{
for(int j=0;j<n;j++)
printf("%d ",a[i][j]);
printf("\n");
}
fclose(stdin);fclose(stdout);
return 0;
}