import java.util.HashMap;

public class Main {

public static void main(String[] args) {

HashMap<String, String> capitalCities = new HashMap<String, String>();

capitalCities.put("England", "London");

capitalCities.put("Germany", "Berlin");

capitalCities.put("Norway", "Oslo");

capitalCities.put("USA", "Washington DC");

capitalCities.clear();

System.out.println(capitalCities);

}

}