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Cod sursa(job #877747)
#include <iostream>
#include <fstream>
int n,i,j,k,a[105][105];
using namespace std;
int main()
{
ifstream fin("royfloyd.in");
ofstream fout("royfloyd.out");
fin>>n;
for(i=1;i<=n;++i)
for(j=1;j<=n;++j)
a[i][j]=0;
for(i=1;i<=n;++i)
for(j=1;j<=n;++j)
fin>>a[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[k][j]+a[i][k]&&a[i][k]&&a[k][j]) a[i][j]=a[k][j]+a[i][k];
for(i=1;i<=n;++i)
{
for(j=1;j<=n;++j)
fout<<a[i][j]<<' ';
fout<<endl;
}
return 0;
}