View Compilation Error

0_0_22198387_25767.cpp: In member function 'int IntervalTree::query(int, int, int, int, int, int)':
0_0_22198387_25767.cpp:52:34: error: 'axddv' was not declared in this scope
         return query(p, q, lson, axddv + add[o]) + query(p, q, rson, addv + add[o]);
                                  ^