#include <bits/stdc++.h>
using namespace std;

#define pb push_back
using ll = long long;

const string fn = "sortaret";


ifstream fin(fn + ".in");
ofstream fout(fn + ".out");

int n, m;
vector<int> g[50005];
bitset<50005> viz;

vector<int> ord;

void dfs(int nod) {
    viz[nod] = true;
    for (auto fiu : g[nod]) {
        if (!viz[fiu])
            dfs(fiu);
    }
    ord.pb(nod);
}

int main() {

    int x, y;

    fin >> n >> m;

    while (m--) {
        fin >> x >> y;
        g[x].pb(y);
    }

    for (int i = 1; i <= n; ++i)
        if (!viz[i])
            dfs(i);
    reverse(ord.begin(), ord.end());
    for (auto i : ord)
        fout << i << " ";
    fin.close();
    fout.close();
    return 0;
}