#include <bits/stdc++.h>
#define cin fin
#define cout fout
using namespace std;
ifstream fin("sortaret.in");
ofstream fout("sortaret.out");
int main()
{
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    int n, m;
    cin >> n >> m;
    vector<vector<int>> g(n + 1);
    vector<int> ind(n + 1);
    for(int i = 0 ; i < m; i++)
    {
        int a, b;
        cin >> a >> b;
        g[a].push_back(b);
        ind[b]++;
    }
    queue<int> q;
    vector<int> sorted;
    for(int i = 1; i <= n; i++)
        if(ind[i] == 0)
            q.push(i);
    while(!q.empty())
    {
        int a = q.front();
        q.pop();
        sorted.push_back(a);
        for(auto v : g[a]){
            ind[v]--;
            if(ind[v] == 0)
                q.push(v);
        }
    }
    for(int i = 0; i < n; i++)
        cout << sorted[i] <<' ';
    return 0;
}