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Cod sursa(job #668109)
#include<fstream>
using namespace std;
ifstream f("royfloyd.in");
ofstream g("royfloyd.out");
int i,j,k,n,a[51][51];
void citire()
{f>>n;
for(i=1;i<=n;i++)
for(j=1;j<=n;j++)
f>>a[i][j];
}
void roy()
{for(k=1;k<=n;k++)
for(i=1;i<=n;i++)
for(j=1;j<=n;j++)
if (a[i][k] && a[k][j] && (a[i][j] > a[i][k] + a[k][j] || !a[i][j]) && i != j) a[i][j] = a[i][k] + a[k][j];
}
void afisare()
{for(i=1;i<=n;i++)
{for(j=1;j<=n;j++)
g<<a[i][j]<<' ';
g<<'\n';}
}
int main()
{citire(); roy(); afisare(); return 0; }