View Compilation Error

0_0_39681520_16845.cpp: In function 'int main()':
0_0_39681520_16845.cpp:99:17: error: 'memset' was not declared in this scope
   99 |                 memset(V, 0, sizeof(V[0]) * n + 10);
      |                 ^~~~~~
0_0_39681520_16845.cpp:3:1: note: 'memset' is defined in header '<cstring>'; did you forget to '#include <cstring>'?
    2 | #include <algorithm>
  +++ |+#include <cstring>
    3 |