View Compilation Error

0_0_39276043_2253.cpp: In function 'int main()':
0_0_39276043_2253.cpp:39:17: error: 'memset' was not declared in this scope
   39 |                 memset(in_degree,0,sizeof(in_degree));
      |                 ^~~~~~
0_0_39276043_2253.cpp:3:1: note: 'memset' is defined in header '<cstring>'; did you forget to '#include <cstring>'?
    2 | #include <vector>
  +++ |+#include <cstring>
    3 |