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Cod sursa(job #562035)
#include <cstdio>
int e[101][101];
int n;
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",&e[i][j]);
for(int k=1;k<=n;k++)
for(int i=1;i<=n;i++)
for(int j=1;j<=n;j++)
{
if(e[i][k] && e[k][j])
e[i][j]=(e[i][j]<=(e[i][k]+e[k][j])?e[i][j]:(e[i][k]+e[k][j]));
if(!e[i][j] && e[i][k] && e[k][j] && i!=j)
e[i][j]=e[i][k]+e[k][j];
}
for(int i=1;i<=n;i++)
{
for(int j=1;j<=n;j++)
printf("%d ",e[i][j]);
printf("\n");
}
return 0;
}