#include<bits/stdc++.h>

using namespace std;

ifstream fin("sortaret.in");
ofstream fout("sortare.out");
#define cin fin
#define cout fout

#define N 100005
vector < vector < int > > gr;
vector < int > sol, v;
int n, m, x, y;

int main()
{
    cin >> n >> m;
    gr.resize(n+5);
    sol.resize(n+5);
    v.resize(n+5);
    for(int i = 1 ; i <= m ; i++)
    {
        cin >> x >> y;
        gr[x].push_back(y);
        sol[y]++;
    }
    while(v[0] < n)
    {
        for(int i = 1 ; i <= n ; i++)
        {
            if(sol[i] == 0)
            {
                sol[i] = -1;
                v[++v[0]] = i;
                for(auto t : gr[i])
                {
                    sol[t]--;
                }
            }
        }
    }
    for(int i = 1 ; i <= n ; i++)cout << v[i] << " ";
    return 0;
}