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Cod sursa(job #870949)
#include<iostream>
#include<fstream>
using namespace std;
ifstream f("royfloyd.in");
ofstream g("royfloyd.out");
int a[101][101],n,i,j,k;
int main()
{f>>n;
for(i=1;i<=n;i++)
for(j=1;j<=n;j++)
f>>a[i][j];
for(k=1;k<=n;k++)
for(i=1;i<=n;i++)
for(j=1;j<=n;j++)
if(a[i][k]!=0&&a[k][j]!=0)
if(a[i][k]+a[k][j]<a[i][j]||a[i][j]==0&&i!=j)
a[i][j]=a[i][k]+a[k][j];
for(i=1;i<=n;i++)
{for(j=1;j<=n;j++)
g<<a[i][j]<<" ";
g<<endl;}
}