import java.util.ArrayList;
import java.util.HashMap;
import java.util.Scanner;

public class MyProgram {
    public static void main(String[] args) {
        ArrayList<HashMap<String, String>> friends = new ArrayList<>();

        HashMap<String, String> person1 = new HashMap<>();
        person1.put("name", "John");
        person1.put("age", "30");
        person1.put("city", "New York");
        friends.add(person1);

        HashMap<String, String> person2 = new HashMap<>();
        person2.put("name", "Alice");
        person2.put("age", "25");
        person2.put("city", "Los Angeles");
        friends.add(person2);

        // --- TODO: 補齊主程式 ---

    }
}