class Super {
  void extendedMethod1(int i) {}
  void extendedMethod2(num i) {}
  void overriddenMethod1(int i) {}
  void overriddenMethod2(num n) {}
}

class Class extends Super {
  void extendedMethod1(num n);
  void extendedMethod2(int i);
  void overriddenMethod1(num n) {}
  void overriddenMethod2(int n) {}
}

main() {}