func_code_string: #include <bits/stdc++.h>   using namespace std;   int ans[200010];   int main() {     int n;     cin >> n;     if (n & 1) {       puts( YES );       bool f = true;       for (int i = 0; i < n; i++) {         if (f)           ans[i + n] = (i + 1) * 2, ans[i] = (i + 1) * 2 - 1;         else           ans[i] = (i + 1) * 2, ans[i + n] = (i + 1) * 2 - 1;         f = !f;       }       for (int i = 0; i < (n * 2); i++) {         cout << ans[i] <<    ;       }     } else       puts( NO );   }   