View Compilation Error

0_0_39529518_23986.cpp: In function 'int main()':
0_0_39529518_23986.cpp:23:5: error: 'memset' was not declared in this scope
   23 |     memset(sg, -1, sizeof(sg));
      |     ^~~~~~
0_0_39529518_23986.cpp:3:1: note: 'memset' is defined in header '<cstring>'; did you forget to '#include <cstring>'?
    2 | #include <algorithm>
  +++ |+#include <cstring>
    3 | const int N = 1010;