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Cod sursa(job #852593)
#include<fstream>
using namespace std;
ifstream f("royfloyd.in");
ofstream g("royfloyd.out");
int n,i,j,k,a[101][101];
int main()
{
f>>n;
for(i=1;i<=n;++i)
for(j=1;j<=n;++j)
f>>a[i][j];
for(k=1;k<=n;++k)
for(i=1;i<=n;++i)
for(j=1;j<=n;++j)
if((a[i][j]>a[i][k]+a[k][j]||a[i][j]==0)&&a[i][k]&&a[k][j]&&i!=j)
a[i][j]=a[i][k]+a[k][j];
for(i=1;i<=n;++i,g<<'\n')
for(j=1;j<=n;++j)
g<<a[i][j]<<' ';
return 0;
}