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Cod sursa(job #696020)
#include <fstream>
using namespace std;
#define dim 105
int v[dim][dim];
int main()
{
ifstream fin("royfloyd.in");
ofstream fout("royfloyd.out");
int n, i, j, k;
fin>>n;
for(i=1;i<=n;++i)
for(j=1;j<=n;++j)
fin>>v[i][j];
for(i=1;i<=n;++i)
for(j=1;j<=n;++j)
for(k=1;k<=n;++k)
if(v[j][i] && v[i][k] && (v[j][i]+v[i][k]<v[j][k] || v[j][k]==0) && j!=k)
v[j][k]=v[j][i]+v[i][k];
for(i=1;i<=n;++i)
{
for(j=1;j<=n;++j)
fout<<v[i][j] <<" ";
fout<<'\n';
}
return 0;
}