#include <iostream>
#include <fstream>
#include <vector>
#define NM 50002
using namespace std;

vector <int> np;

vector <int> gr[NM];

int n, m, a, b, v[NM], t[NM], nn;

int main()
{
    ifstream fin ("sortaret.in");
    ofstream fout ("sortaret.out");
    fin >> n >> m;
    for(int i = 1; i <= n; i++)
        v[i] = i;
    for(int i = 1; i <= m; i++)
    {
        fin >> a >> b;
        gr[a].push_back(b);
        t[b]++;
    }
    nn = n;
    while(nn > 0)
    {
        for(int i = 1; i <= n; i++)
            if(t[i] == 0)
                np.push_back(i);
        for(auto i:np)
        {
            fout << i << " ";
            t[i]--;
            for(auto j:gr[i])
                t[j]--;
            nn--;
        }
        np.clear();
    }
    return 0;
}