View Compilation Error

0_0_14218422_14864.cpp: In function 'LL query(int, int, int, int, int)':
0_0_14218422_14864.cpp:175:21: error: 'ans' was not declared in this scope
         aa = max(aa,ans);
                     ^
0_0_14218422_14864.cpp:176:9: error: return-statement with no value, in function returning 'LL {aka long long int}' [-fpermissive]
         return;
         ^
0_0_14218422_14864.cpp: At global scope:
0_0_14218422_14864.cpp:190:2: error: expected unqualified-id before '/' token
 */
  ^
0_0_14218422_14864.cpp:190:2: error: expected constructor, destructor, or type conversion before '/' token