View Compilation Error

0_0_23893149_24660.cpp:22:1: error: 'in' does not name a type
 in query(int l,int r,int root,int LL,int RR){
 ^
0_0_23893149_24660.cpp: In function 'int main()':
0_0_23893149_24660.cpp:57:28: error: 'query' was not declared in this scope
     cout<<query(1,n,1,LL,RR)<<endl;
                            ^