View Compilation Error

0_0_39178894_10348.cpp: In function 'int main()':
0_0_39178894_10348.cpp:29:9: error: 'memset' was not declared in this scope
   29 |         memset(a,0,sizeof(a));
      |         ^~~~~~
0_0_39178894_10348.cpp:6:1: note: 'memset' is defined in header '<cstring>'; did you forget to '#include <cstring>'?
    5 | #include<queue>
  +++ |+#include <cstring>
    6 | //#define int long long