#include <fstream>
#include <vector>
#define oo 0x7fffffff
using namespace std;

ifstream fin("sortaret.in");
ofstream fout("sortaret.out");

int n, m;
vector<int> adj[50001];
int grd[50001];

bool check_vertice(int x, int y)
{
    for (int i = 0; i < adj[x].size(); i++)
        if (adj[x][i] == y)
            return true;

    return false;
}

int main()
{
    int x, y;

    fin >> n >> m;
    while (m--)
    {
        fin >> x >> y;
        if (!check_vertice(x, y))
        {
            adj[x].push_back(y);
            grd[y]++;
        }
    }
    while (true)
    {
        int k = 1;
        while (k <= n)
        {
            if (grd[k] == 0)
            break;
            k++;
        }
        if (k <= n)
        {
            fout << k << ' ';
            for (int i = 0; i < adj[k].size(); i++)
                grd[adj[k][i]]--;
            grd[k] = oo;
        }
        else break;
    }
}