#include <bits/stdc++.h>

using namespace std;

ifstream fin("sortaret.in");
ofstream fout("sortaret.out");

const int N_MAX = 1e5 + 2;

int n;
vector <int> sorted;
vector <int> graph[N_MAX];
bitset <N_MAX> visited;

void read() {
    int x, y, m;

    fin >> n >> m;
    for (int i = 0; i < m; ++i) {
        fin >> x >> y;
        graph[x].emplace_back(y);
    }
}

void dfs(int node) {
    visited.set(node);
    for (const auto &son : graph[node]) {
        if (!visited[son]) {
            dfs(son);
        }
    }

    sorted.emplace_back(node);
}

void solve() {
    for (int i = 1; i <= n; ++i) {
        if (!visited[i]) {
            dfs(i);
        }
    }
}

void write() {
     reverse(sorted.begin(), sorted.end());
     for (const auto &i : sorted) {
        fout << i << ' ';
     }
}

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

    return 0;
}