View Compilation Error

0_0_33225905_4795.cpp:74:0: error: unterminated argument list invoking macro "mid"
         if(mid(l, 
 ^
0_0_33225905_4795.cpp:74:12: error: expected '}' at end of input
         if(mid(l, 
            ^
0_0_33225905_4795.cpp: In member function 'std::pair<int, int> tree_1::query(int, int, int, int, int)':
0_0_33225905_4795.cpp:74:12: error: 'mid' was not declared in this scope
0_0_33225905_4795.cpp:74:12: error: expected ')' at end of input
0_0_33225905_4795.cpp:74:12: error: expected statement at end of input
0_0_33225905_4795.cpp:74:12: error: expected '}' at end of input
0_0_33225905_4795.cpp: At global scope:
0_0_33225905_4795.cpp:74:12: error: expected unqualified-id at end of input