#include <iostream>

class A
{
private:
public:
  void Foo() const {std::cout << "A::Foo" << std::endl;}
};

class B
{
private:
  void Foo() const {std::cout << "B::Foo" << std::endl;}
public:
};

int main()
{
  A a;
  B b;
  a.Foo();
  b.Foo();

  return 0;
}