Mã chấm: 98783

Main.cc: In function ‘int main()’:
Main.cc:38:23: error: ‘cnt’ was not declared in this scope
  if (check == true && cnt == 3) cout<<"CO";
                       ^~~
Main.cc:38:23: note: suggested alternative: ‘int’
  if (check == true && cnt == 3) cout<<"CO";
                       ^~~
                       int