View Compilation Error

0_0_39923641_9228.cpp: In function 'int main()':
0_0_39923641_9228.cpp:30:17: error: 'ans' was not declared in this scope; did you mean 'abs'?
   30 |                 ans = 0;
      |                 ^~~
      |                 abs
0_0_39923641_9228.cpp:32:25: error: 'f' was not declared in this scope
   32 |                         f[i] = 0;
      |                         ^