#include <iostream>

class A {
public:
  static int f() { return 1; }
};
namespace this_a {
  int f() { return 2; }
}

int main() {
  A obj;
  int x = obj.f();
  int y = A::f();
  int z = this_a::f();
  std::cout << x << y << z << '\n';
  return 0;
}

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