#include <bits/stdc++.h>
using namespace std;
ifstream in("sortaret.in");
ofstream out("sortaret.out");
const int NMAX =  50000;
vector<int> g[NMAX + 5];
int grad[NMAX + 5];
bitset<50005> viz;
int n, m;

void sortare_t()
{
    int cnt = 0;
    while(cnt < n)
    {
        for(int i = 1; i <= n; ++i)
        {
            if(grad[i] == 0 && viz[i] == 0)
            {
                out << i << ' ';
                for(auto it : g[i])
                {
                    --grad[it];
                }
                ++cnt;
                viz[i] = 1;
            }
        }
    }
}

int main()
{
    in >> n >> m;

    for(int i = 1; i <= m; ++i)
    {
        int u, v;
        in >> u >> v;

        g[u].push_back(v);
        ++grad[v];
    }

    sortare_t();
}