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Cod sursa(job #991700)
#include <fstream>
using namespace std;
ifstream f("royfloyd.in");
ofstream g("royfloyd.out");
int i,j,n,k,v[110][110];
int main()
{
f>>n;
for(i=1;i<=n;i++)
for(j=1;j<=n;j++)
f>>v[i][j];
for(k=1;k<=n;k++)
{
for(i=1;i<=n;i++)
{
for(j=1;j<=n;j++)
{
if(v[i][k]&&v[k][j])
{
if((!v[i][j]||v[i][j]>v[i][k]+v[k][j])&&i!=j)
v[i][j]=v[i][k]+v[k][j];
}
}
}
}
for(i=1;i<=n;i++)
{
for(j=1;j<=n;j++)
{
g<<v[i][j]<<" ";
}
g<<'\n';
}
return 0;
}