题解 | #记票统计#

import java.util.*;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        String[] nname = new String[n];
        for (int i = 0; i < n; i++) {
            nname[i] = sc.next();
        }
        int m = sc.nextInt();
        String[] str = new String[m];
        for (int i = 0; i < m; i++) {
            str[i] = sc.next();
        }
        HashMap<String, Integer> map = new HashMap<>();
        for (String s : nname) {
            map.put(s, 0);
        }
        map.put("Invalid", 0);
        for (int i = 0; i < m; i++) {
            if (map.get(str[i]) != null) {
                map.put(str[i],map.get(str[i])+1);
            }else{
                map.put("Invalid",map.get("Invalid")+1);
            }
        }
        for(String s : nname){
            System.out.println(s+" : "+map.get(s));
        }
        System.out.print("Invalid : "+map.get("Invalid"));
    }
}