View Compilation Error

0_0_39470092_32718.cpp: In function 'void solve()':
0_0_39470092_32718.cpp:83:5: error: 'memset' was not declared in this scope
   83 |     memset(AC,0,sizeof(AC));
      |     ^~~~~~
0_0_39470092_32718.cpp:4:1: note: 'memset' is defined in header '<cstring>'; did you forget to '#include <cstring>'?
    3 | #include<set>
  +++ |+#include <cstring>
    4 | #include<vector>