View Compilation Error

0_0_39544375_16941.cpp: In function 'int main()':
0_0_39544375_16941.cpp:14:9: error: 'memset' was not declared in this scope
   14 |         memset(c1, 0, sizeof(c1));
      |         ^~~~~~
0_0_39544375_16941.cpp:3:1: note: 'memset' is defined in header '<cstring>'; did you forget to '#include <cstring>'?
    2 | #include <algorithm>
  +++ |+#include <cstring>
    3 | #define N 51000