View Compilation Error

0_0_39038253_26723.cpp: In function 'int main()':
0_0_39038253_26723.cpp:23:37: error: 'D' was not declared in this scope
   23 |                 for (int i = 0; i < D; i++) {
      |                                     ^
0_0_39038253_26723.cpp:27:17: error: 'isLeap' was not declared in this scope
   27 |             if (isLeap(y))a[2] = 29;
      |                 ^~~~~~