View Compilation Error

0_0_38811525_22739.cpp: In function 'int main()':
0_0_38811525_22739.cpp:22:9: error: 'LL' was not declared in this scope
   22 |         LL ans = 0;
      |         ^~
0_0_38811525_22739.cpp:23:9: error: 'ans' was not declared in this scope; did you mean 'abs'?
   23 |         ans += n / 2;
      |         ^~~
      |         abs