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Cod sursa(job #949408)
#include<fstream>
using namespace std;
ifstream f("royfloyd.in");
ofstream g("royfloyd.out");
int a[101][101],n;
void royfloyd()
{
for(int k=1;k<=n;k++)
{
for(int i=1;i<=n;i++)
{
for(int j=1;j<=n;j++)
{
if(a[i][k]!=0&&a[k][j]!=0&&(a[i][j]>a[i][k]+a[k][j]||a[i][j]==0)&&i!=j)
a[i][j]=a[i][k]+a[k][j];
}
}
}
for(int i=1;i<=n;i++)
{
for(int j=1;j<=n;j++)
g<<a[i][j]<<" ";
g<<"\n";
}
}
int main()
{
f>>n;
for(int i=1;i<=n;i++)
for(int j=1;j<=n;j++)
f>>a[i][j];
royfloyd();
return 0;
}