View Compilation Error

0_0_38688706_31267.cpp: In member function 'void SGT::build(long long int&, long long int, long long int)':
0_0_38688706_31267.cpp:129:25: error: expression cannot be used as a function
  129 |                 build(lc(o),l,mid);
      |                       ~~^~~
0_0_38688706_31267.cpp:130:25: error: expression cannot be used as a function
  130 |                 build(rc(o),mid+1,r);
      |                       ~~^~~