View Compilation Error

0_0_39363567_9509.cpp: In function 'void solve()':
0_0_39363567_9509.cpp:65:9: error: 'memset' was not declared in this scope
   65 |         memset(num, 0, sizeof(num));
      |         ^~~~~~
0_0_39363567_9509.cpp:3:1: note: 'memset' is defined in header '<cstring>'; did you forget to '#include <cstring>'?
    2 | #include<iostream>
  +++ |+#include <cstring>
    3 | #include<string>