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Cod sursa(job #663036)
#include<fstream>
#define Nmax 101
using namespace std;
int v[Nmax][Nmax], i, j, k, n;
ifstream fin("royfloyd.in");
ofstream fout("royfloyd.out");
int main()
{
fin>>n;
for(i=1;i<=n;i++)
for(j=1;j<=n;j++)
fin>>v[i][j];
for(k=1;k<=n;k++)
for(i=1;i<=n;i++)
for(j=1;j<=n;j++)
if(i!=j)
if (v[i][k] && v[k][j] && (v[i][j] > v[i][k] + v[k][j] || !v[i][j]) && i != j)
v[i][j]=v[i][k]+v[k][j];
for(i=1;i<=n;i++)
{
for(j=1;j<=n;j++)
fout<<v[i][j]<<' ';
fout<<'\n';
}
fin.close();
fout.close();
return 0;
}