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Cod sursa(job #158106)
#include<fstream>
using namespace std;
ifstream f("royfloyd.in");
ofstream g("royfloyd.out");
#define N 101
#define Inf (1<<30)
int a[N][N],n;
int main()
{
int i,j,k;
f>>n;
for(i=1;i<=n;i++)
for(j=1;j<=n;j++)
f>>a[i][j];
for(i=1;i<=n;i++)
for(j=1;j<=n;j++)
if(i!=j&&!a[i][j])
a[i][j]=Inf;
for(k=1;k<=n;k++)
for(i=1;i<=n;i++)
for(j=1;j<=n;j++)
if(a[i][k]+a[k][j]<a[i][j])
a[i][j]=a[i][k]+a[k][j];
for(i=1;i<=n;i++)
{
for(j=1;j<=n;j++)
g<<a[i][j]<<' ';
g<<'\n';
}
return 0;
}