#include <fstream>
#include <vector>
using namespace std;

ifstream in("sortare.in");
ofstream out("sortare.out");

int n, m, d_ext[50001], coada[50001];
vector<int> mat[50001];

void sortare_topologica(){

    for(int i = 1; i <= n; i++)
        if(d_ext[i] == 0) coada[++coada[0]] = i;

    for(int i = 1; i <= n; i++){
        int x = coada[i];
        for(vector<int>::iterator it = mat[x].begin(); it != mat[x].end(); ++it)
        {
            d_ext[*it]--;
            if(d_ext[*it] == 0) coada[++coada[0]] = *it;
        }
    }
}

void citire(){
    int a, b;
    in >> n >> m;
    for(int i = 1; i <= m; i++){
        in >> a >> b;
        mat[b].push_back(a);//facem graful transpus
        d_ext[a]++;
    }
}

void afisare(){
    for(int i = n; i >= 1; i--)
        out << coada[i]<<' ';
}

int main()
{
    citire();
    sortare_topologica();
    afisare();

    return 0;
}