View Compilation Error

0_0_36511986_28296.cpp: In function 'int query(int, int)':
0_0_36511986_28296.cpp:19:8: error: 'log_value' was not declared in this scope
  int k=log_value[r-l+1];
        ^
0_0_36511986_28296.cpp: In function 'int main()':
0_0_36511986_28296.cpp:27:17: error: 'N' was not declared in this scope
  for(int i=1;i<=N;i++){
                 ^
0_0_36511986_28296.cpp:31:3: error: 'log_value' was not declared in this scope
   log_value[i]=tmp;
   ^