View Compilation Error

0_0_21929639_10037.cpp: In function 'int query(int, int, int, int, int)':
0_0_21929639_10037.cpp:36:13: error: expected primary-expression at end of input
         sum +
             ^
0_0_21929639_10037.cpp:36:13: error: expected '}' at end of input
0_0_21929639_10037.cpp:36:13: error: expected '}' at end of input