#include <fstream>
#define dim 10005
using namespace std;
ifstream fin("sortaret.in");
ofstream fout("sortaret.out");
int a[dim][dim], grad[dim], c[dim];
int main()
{
    int n, i, m, x, y;
    fin >> n >> m;
    for(i = 1; i <= m; i++)
    {
        fin >> x >> y;
        a[x][y] = 1;
        grad[y]++;
    }
    int ps = 1, pi = 0;
    for(i = 1; i <= n; i++)
        if(grad[i] == 0)
            c[++pi]=i;
    while(ps <= pi) {
        x = c[ps];
        for(i = 1; i <= n; i++)
            if(a[x][i] == 1) {
                grad[i]--;
                if(grad[i] == 0)
                    c[++pi]=i;
            }
        ps++;
    }
    for(i = 1; i <= n; i++)
        fout << c[i] << " ";
    return 0;
}