View Compilation Error

0_0_38780529_17014.cpp: In function 'int main()':
0_0_38780529_17014.cpp:66:17: error: 'memset' was not declared in this scope
   66 |                 memset(v ,0 ,sizeof(v));
      |                 ^~~~~~
0_0_38780529_17014.cpp:4:1: note: 'memset' is defined in header '<cstring>'; did you forget to '#include <cstring>'?
    3 | #include <algorithm>
  +++ |+#include <cstring>
    4 | using namespace std;