func_code_string: #include <bits/stdc++.h>   using namespace std;   template <typename T>   inline void read(T &x) {     char c;     bool nega = 0;     while ((!isdigit(c = getchar())) && (c !=  - ))       ;     if (c ==  - ) {       nega = 1;       c = getchar();     }     x = c - 48;     while (isdigit(c = getchar())) x = x * 10 + c - 48;     if (nega) x = -x;   }   template <typename T>   inline void writep(T x) {     if (x > 9) writep(x / 10);     putchar(x % 10 + 48);   }   template <typename T>   inline void write(T x) {     if (x < 0) {       putchar( - );       x = -x;     }     writep(x);     putchar(   );   }   template <typename T>   inline void writeln(T x) {     write(x);     putchar(  n );   }   template <typename R, typename D>   inline void Min(R &a, D b) {     if (a > b) a = b;   }   template <typename D, typename R>   inline void Max(D &a, R b) {     if (a < b) a = b;   }   const int N = 10005, M = 300005;   bool dd[10];   int T, n;   int main() {     ios_base::sync_with_stdio(NULL);     cin.tie(NULL);     cout.tie(NULL);     cin >> T;     while (T--) {       cin >> n;       if ((n / 2) & 1) {         cout <<  NO n ;         continue;       }       cout <<  YES n ;       for (int i = 1; i <= n / 2; ++i) cout << i * 2 <<    ;       for (int i = 1; i <= n / 2 - 1; ++i) cout << i * 2 - 1 <<    ;       cout << n + n / 2 - 1;       cout <<   n ;     }     return 0;   }   