View Compilation Error

0_0_39342656_7427.cpp: In function 'int main()':
0_0_39342656_7427.cpp:54:9: error: 'memset' was not declared in this scope
   54 |         memset(ans,0,sizeof(ans));
      |         ^~~~~~
0_0_39342656_7427.cpp:3:1: note: 'memset' is defined in header '<cstring>'; did you forget to '#include <cstring>'?
    2 | #include <iostream>
  +++ |+#include <cstring>
    3 | #define lowbit(x) (x&(-x))