题解 | #记票统计#

import java.util.Scanner;
import java.util.LinkedHashMap;
import java.util.HashMap;
import java.util.Map;

// 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 sc = new Scanner(System.in);
        int n = sc.nextInt();
        Map<String, Integer> ren = new LinkedHashMap<>();
        for (int i = 0; i < n; i++) {
            ren.put(sc.next(), 0);
        }
        int p = sc.nextInt();
        int Invalid = 0; //无效票
        for (int i = 0; i < p; i++) {
            String tou = sc.next(); //上去投票
            if (ren.containsKey(tou)) {
                ren.put(tou, ren.get(tou) + 1);
            } else {
                Invalid++;
            }
        }
        for (String k : ren.keySet()) {
            System.out.println(k + " : " + ren.get(k));
        }
        System.out.println("Invalid" + " : " + Invalid);
    }
}