View Compilation Error

0_0_39744080_31888.cpp: In function 'int main()':
0_0_39744080_31888.cpp:42:9: error: 'memset' was not declared in this scope
   42 |         memset(h, -1, sizeof h);
      |         ^~~~~~
0_0_39744080_31888.cpp:2:1: note: 'memset' is defined in header '<cstring>'; did you forget to '#include <cstring>'?
    1 | #include <iostream>
  +++ |+#include <cstring>
    2 | #define int long long