View Compilation Error

0_0_38909458_27609.cpp: In function 'int main()':
0_0_38909458_27609.cpp:69:17: error: 'memset' was not declared in this scope
   69 |                 memset(vis, 0, sizeof(vis));
      |                 ^~~~~~
0_0_38909458_27609.cpp:6:1: note: 'memset' is defined in header '<cstring>'; did you forget to '#include <cstring>'?
    5 | #include<map>
  +++ |+#include <cstring>
    6 | using namespace std;