View Compilation Error

0_0_39099462_11859.cpp: In function 'void solve()':
0_0_39099462_11859.cpp:81:28: error: 'calc' was not declared in this scope; did you mean 'calloc'?
   81 |         ans = add(ans, mul(calc(l[i], r[i], i), a[i]));
      |                            ^~~~
      |                            calloc