#include <stdio.h>

class Class_Parent
{
public:
 Class_Parent() {};

 int data_member_1;
};

class Class_Child : public Class_Parent
{
public:
 Class_Child() {};

 int data_member_2;
};

int main(int argc, char *argv[])
{
 printf("Hello World\n");
 return 0;
}