Competitie

#include <fstream>
#define Nmax 1001
using namespace std;
int n,m,a[Nmax],b[Nmax],c[Nmax],inainte[Nmax];
bool finalizat[Nmax];

int main()
{
    int i,j,igasit=-1;
    ifstream f("competitie.in");
    ofstream g("competitie.out");
    f>>n>>m;
    for(i=1;i<=m;++i)
        f>>a[i]>>b[i]; /// a[i]<b[i]
    for(i=1;i<=m;++i)
        ++inainte[b[i]];
    for(j=1;j<=n;++j)
    {
        for(i=1;i<=n;++i)
            if((!finalizat[i])&&(inainte[i]==0))
            {
                finalizat[i]=true;
                c[j]=i;
                igasit=i;
                break;
            }
        for(i=1;i<=m;++i)
            if(a[i]==igasit)
                --inainte[b[i]];
    }
    for(i=1;i<=n;++i)
        g<<c[i]<<' ';
    return 0;
}