天府路

#include <bits/stdc++.h>

using namespace std;

bool check(int x) {
    
}

int main() {
    int n;
    cin >> n;
    for (int i = 1; i <= n; i++) {
        if (n == 1) continue;
        if (check(i)) {
            cout << i << " ";
        }
    }
}