View Compilation Error

0_0_30940261_15703.cpp:27:17: error: 'in' has not been declared
 int query(int L,in
                 ^
0_0_30940261_15703.cpp:27:17: error: expected ',' or '...' at end of input
0_0_30940261_15703.cpp:27:17: error: expected ')' at end of input
0_0_30940261_15703.cpp:27:17: error: expected initializer at end of input