package com.kloboshki;

import java.util.Map;
import java.util.Scanner;
import java.util.TreeMap;

public class Main {

    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        Map<String, String> phoneBook = new TreeMap<>();
        String input = "";

        while (!(input = scanner.nextLine()).equals("")) {
            String[] line = input.split(" ");
            phoneBook.put(line[0], line[1]);
        }
        for (String key : phoneBook.keySet()) {
            System.out.println(phoneBook.get(key));
        }
    }
}