Submission #50325951

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Source Code Expand

/**
 _  _   __  _ _ _  _  _ _
 |a  ||t  ||o    d | |o  |
| __    _| | _ | __|  _ |
| __ |/_  | __  /__\ / _\|

**/

#include <bits/stdc++.h>

using namespace std;

typedef long long ll;



int main () {
    ios_base::sync_with_stdio(false);
    cin.tie(0);

    int n;
    cin >> n;
    cout << n - 1 << " " << n << " ";
    for (int i = n - 2; i >= 1; i--) {
        cout << i << " ";
    }
    for (int k = 2; k < n; k++) {
        if (k % 2 == 0) {
            for (int i = k; i <= n - 2; i++) {
                cout << i << " ";
            }
            cout << n << " " << n - 1 << " ";
        } else {
            for (int i = n; i >= k; i--) {
                cout << i << " ";
            }
        }
    }
    cout << n << "\n";

    return 0;
}

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