View Compilation Error

0_0_38716269_19172.cpp: In function 'void solve()':
0_0_38716269_19172.cpp:15:9: error: 'memset' was not declared in this scope
   15 |         memset(ans, 0, sizeof ans);
      |         ^~~~~~
0_0_38716269_19172.cpp:7:1: note: 'memset' is defined in header '<cstring>'; did you forget to '#include <cstring>'?
    6 | #include<vector>
  +++ |+#include <cstring>
    7 |