View Compilation Error

0_0_39328345_5600.cpp: In function 'void init()':
0_0_39328345_5600.cpp:21:5: error: 'memset' was not declared in this scope
   21 |     memset(cnt, 0, sizeof(cnt));
      |     ^~~~~~
0_0_39328345_5600.cpp:6:1: note: 'memset' is defined in header '<cstring>'; did you forget to '#include <cstring>'?
    5 | #include <algorithm>
  +++ |+#include <cstring>
    6 | using namespace std;