View Compilation Error

0_0_39354519_27061.cpp: In function 'int main()':
0_0_39354519_27061.cpp:41:17: error: 'memset' was not declared in this scope
   41 |                 memset(degree, 0, sizeof(degree));
      |                 ^~~~~~
0_0_39354519_27061.cpp:3:1: note: 'memset' is defined in header '<cstring>'; did you forget to '#include <cstring>'?
    2 | #include<unordered_set>
  +++ |+#include <cstring>
    3 | using namespace std;