题解 | #记票统计#

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);
        // 注意 hasNext 和 hasNextLine 的区别

        int n = in.nextInt();
        Map<String, Integer> map = new LinkedHashMap<>();
        for (int i = 0; i < n; i++)
            map.put(in.next(), 0);

        int num = in.nextInt();
        int Invalid = 0;
        for (int i = 0; i < num; i++) {
            String s = in.next();
            if (map.containsKey(s))
                map.put(s, map.get(s) + 1);
            else
                Invalid++;
        }

        for (Map.Entry<String, Integer> e : map.entrySet())
            System.out.println(e.getKey() + " : " + e.getValue());
        System.out.println("Invalid : " + Invalid);

    }
}