CSES-1070 Permutations

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

#define pb push_back
#define fi first
#define se second
#define INF LONG_LONG_MAX/1000
#define WA() cin.tie(0)->sync_with_stdio(0)
#define all(x) (x).begin(), (x).end()
#define int long long
#define PII pair<int, int>

signed main() { WA();
    int n;
    cin >> n;
    if (n == 2 || n == 3) return cout << "NO SOLUTION", 0;
    for (int i = 2; i <= n; i += 2) cout << i << ' ';
    for (int i = 1; i <= n; i += 2) cout << i << ' ';
}