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Cod sursa(job #755416)
#include<fstream>
using namespace std;
ifstream fin("royfloyd.in");
ofstream fout("royfloyd.out");
int n;
float a[100][100];
void royfloyd()
{
int k, 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];
}
int main(void)
{
// read();
int i,j;
fin>>n;
for(i = 1;i<=n;i++)
for(j=1;j<=n;j++)
{
fin>>a[i][j];
}
royfloyd();
for(i=1;i<=n;i++)
{
for(j=1;j<=n;j++)
fout<<a[i][j]<<" ";
fout<<"\n";
}
fin.close();
fout.close();
return 0;
}