View Compilation Error

0_0_39593354_10935.cpp: In function 'void tc(long long int)':
0_0_39593354_10935.cpp:53:9: error: 'memset' was not declared in this scope
   53 |         memset(rem,0,sizeof(rem));
      |         ^~~~~~
0_0_39593354_10935.cpp:3:1: note: 'memset' is defined in header '<cstring>'; did you forget to '#include <cstring>'?
    2 | #include <cstdio>
  +++ |+#include <cstring>
    3 | #define int long long