говно

#include <iostream>
#include <vector>

using namespace std;

int n, m;
vector<int> used;
vector<vector<int>> g;
vector<int> ans;

void dfs(int v, int parent){
    used[v] = 1;
    for (auto &i : g[v]){
        if (used[i] == 1){
            cout << "No";
            exit(0);
        }
        if (used[i] == 0){
            dfs(i, v);
        }
    }
    used[v] = 2;
    ans.push_back(v);
}


int main() {
    cin >> n >> m;

    used.resize(n);
    g.resize(n);

    for (int i = 0; i < m; i++){
        int fr, to;
        cin >> fr >> to;
        fr--; to--;
        g[fr].emplace_back(to);
    }

    for (int i = 0; i < n; i++){
        if (!used[i]){
            dfs(i, -1);
        }
    }

    cout << "Yes\n";
    for (int i = 0; i < n; i++){
        cout << ans[n - 1 - i] + 1 << ' ';
    }

    return 0;
}