#include <fstream>
#include <vector>

using namespace std;

ifstream cin("sortaret.in");
ofstream cout("sortaret.out");

const int nMax = 5e4 + 5;

int n, m, deg[nMax], q[nMax];
vector <int> v[nMax];

void read(){
    cin >> n >> m;

    while(m--){
        int x, y;
        cin >> x >> y;
        v[x].push_back(y);
        deg[y]++;
    }
}

void solve(){
    for(int i = 1; i <= n; i++)
        if(deg[i] == 0)
            q[++q[0]] = i;

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

void print(){
    for(int i = 1; i <= n; i++)
        cout << q[i] << " ";
}

int main()
{
    read();
    solve();
    print();

    return 0;
}