View Compilation Error

0_0_39790906_23816.cpp: In function 'int KM()':
0_0_39790906_23816.cpp:39:5: error: 'memset' was not declared in this scope
   39 |     memset(linker, -1, sizeof(linker));
      |     ^~~~~~
0_0_39790906_23816.cpp:2:1: note: 'memset' is defined in header '<cstring>'; did you forget to '#include <cstring>'?
    1 | #include <iostream>
  +++ |+#include <cstring>
    2 | using namespace std;