func_code_string: #include <bits/stdc++.h>   using namespace std;   const long long N = 2e5 + 5;   long long v[N];   signed main() {     long long n;     cin >> n;     long long p = 2 * n;     long long x = p * (p + 1);     if (x % 4 == 0)       cout <<  NO n ;     else {       cout <<  YES n ;       for (long long i = 1; i <= 2 * n; i++) v[i] = i;       for (long long i = 1; i <= n; i++) {         if (i & 1) {           cout << 2 * i - 1 <<    ;           v[2 * i - 1] = 0;         } else {           cout << 2 * i <<    ;           v[2 * i] = 0;         }       }       for (long long i = 1; i <= 2 * n; i++)         if (v[i] != 0) cout << v[i] <<    ;     }   }   