#include <fstream>
#include <vector>
using namespace std;

int in[100003], i, j, n, m, viz[50003];
vector <int> a[50003];

ifstream f("sortaret.in");
ofstream g("sortaret.out");

int main()
{
    f>>n>>m;
    int x, y;
    for (i=1; i<=m; ++i) {
        f>>x>>y;
        a[x].push_back(y);
        ++in[y];
    }
    for (i=1; i<=n; ++i) {
        int ok=0;
        for (j=1; j<=n && !ok; ++j)
            if (!viz[j] && in[j]==0) {
                g<<j<<' ';
                viz[j]=1;
                for (int k=0; k<a[j].size(); ++k)
                    --in[a[j][k]];
                ok=1;
            }
    }
    return 0;
}