题解 | #成绩排序#

import java.util.*;

// 注意类名必须为 Main, 不要有任何 package xxx 信息
public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        Map<String, Integer> map = new HashMap<>();
        int n = in.nextInt();
        int flag = in.nextInt();
        int finalFlag = flag == 0 ? -1 : 1;
        while (n > 0) {
            map.put((10000 - n) + in.next(), in.nextInt());
            n--;
        }
        List<Map.Entry<String, Integer>> list = new ArrayList<>();
        list.addAll(map.entrySet());
        Collections.sort(list, new Comparator<Map.Entry<String, Integer>>() {
            @Override
            public int compare(Map.Entry<String, Integer> o1, Map.Entry<String, Integer> o2) {
                if (o1.getValue().equals(o2.getValue())) {
                    return o1.getKey().compareTo(o2.getKey());
                }
                return (o1.getValue() - o2.getValue()) * finalFlag;
            }
        });
        for (Map.Entry<String, Integer> entry : list) {
            System.out.println(entry.getKey().substring(4) + " " + entry.getValue());
        }
    }
}