View Compilation Error

0_0_38834285_31269.cpp: In function 'int main()':
0_0_38834285_31269.cpp:26:9: error: 'memset' was not declared in this scope
   26 |         memset(vall, 0, sizeof vall); memset(weii, 0, sizeof weii);
      |         ^~~~~~
0_0_38834285_31269.cpp:2:1: note: 'memset' is defined in header '<cstring>'; did you forget to '#include <cstring>'?
    1 | #include <iostream>
  +++ |+#include <cstring>
    2 | using namespace std;