View Compilation Error

0_0_39511347_7882.cpp: In function 'void solve()':
0_0_39511347_7882.cpp:9:5: error: 'memset' was not declared in this scope
    9 |     memset(ex, 0, sizeof(ex));
      |     ^~~~~~
0_0_39511347_7882.cpp:2:1: note: 'memset' is defined in header '<cstring>'; did you forget to '#include <cstring>'?
    1 | #include<iostream>
  +++ |+#include <cstring>
    2 |