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Cod sursa(job #754181)
#include <fstream>
using namespace std;
ifstream fin("royfloyd.in");
ofstream fout("royfloyd.out");
int main()
{
int c[101][101],n;
fin>>n;
for(int i=1;i<=n;i++)
for(int j=1;j<=n;j++)
{
fin>>c[i][j];
}
for(int k=1;k<=n;k++)
for(int i=1;i<=n;i++)
for(int j=1;j<=n;j++)
if(c[i][k] && c[k][j] && i!=j && (c[i][j]>c[i][k]+c[k][j] || !c[i][j]))
c[i][j]=c[i][k]+c[k][j];
for(int i=1;i<=n;i++)
{
for(int j=1;j<=n;j++)
fout<<c[i][j]<<' ';
fout<<'\n';
}
fin.close();
fout.close();
return 0;
}