#include <fstream>
#include <vector>
using namespace std;
ifstream cin("sortaret.in");
ofstream cout("sortaret.out");
vector <vector <int> > a;
int sol[50002], grad[50002], n, m, k;
int main()
{
    cin >> n >> m;

    a.resize(n + 2);

    int x, y;
    for(int i = 1; i <= m; i++)
    {
        cin >> x >> y;

        grad[y]++;
        a[x].push_back(y);
    }

    while(k < n)
        for(int i = 1; i <= n; i++)
            if(grad[i] == 0)
            {
                for(int j = 0; j < a[i].size(); j++)
                    grad[a[i][j]]--;

                sol[++k] = i;

                grad[i] = -1;
            }

    for(int i = 1; i <= n; i++)
        cout << sol[i] << " ";

    return 0;
}