#include <bits/stdc++.h>

#define nlim 100005

using namespace std;

ifstream f("sortaret.in");
ofstream g("sortaret.out");

int n, m, gr[nlim];
vector<int> v[nlim];
int q[nlim];

void citire() {
    f >> n >> m;
    for (int i = 1; i <= m; ++i) {
        int x, y;
        f >> x >> y;
        v[x].push_back(y);
        ++gr[y];
    }
}

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

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

int main()
{
    citire();
    rez();
    afis();
}