View Compilation Error

0_0_39554689_2663.cpp: In function 'void solve()':
0_0_39554689_2663.cpp:97:17: error: 'ans' was not declared in this scope; did you mean 'abs'?
   97 |     int R = cal(ans,res, r);int L = cal(ans,res, l - 1);
      |                 ^~~
      |                 abs
0_0_39554689_2663.cpp:97:21: error: 'res' was not declared in this scope
   97 |     int R = cal(ans,res, r);int L = cal(ans,res, l - 1);
      |                     ^~~