#include <fstream>
#include <vector>

using namespace std;

vector<int> L[50005];
int c[50005];

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

    int n, m, x, y;
    f >> n >> m;
    for(int i = 1; i <= m; i ++) {
        f >> x >> y;
        L[x].push_back(y);
        c[y] ++;
    }

    int nr = n;
    while(nr > 0) {

        for(int i = 1; i <= n; i ++) {
            if(!c[i]) {
                g << i << " ";
                c[i] = -1;
                nr --;
                for(int j = 0; j < L[i].size(); j ++)
                    c[L[i][j]] --;
            }
        }
    }
    g << "\n";
    return 0;
}