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 sc = new Scanner(System.in);
        
        int n = sc.nextInt();
        //String[] names = sc.nextLine().split(" "); //不太好使
        String[] names = new String[n];
        for(int i=0; i<n; i++){
            names[i] = sc.next();
        }
        int m = sc.nextInt();
        //String[] votes = sc.nextLine().split(" ");
        String[] votes = new String[m];
        for(int j=0; j<m; j++){
            votes[j] = sc.next();
        }

        if(n<1 || n>100 || m<1 || m>100) return;

        Map<String, Integer> map = new HashMap<>();
        for(String str: names){
            map.put(str, 0);
        }
        int invalid = 0;

        Set<String> mpKeys = map.keySet();
        for(String s: votes){
            if(mpKeys.contains(s)){
                map.replace(s, map.get(s)+1);
            }else{
                invalid++;
            }
        }

        /*for(String k: mpKeys){
            System.out.println(k + " : " + map.get(k));
        }*/
        //需要按照输入顺序输出，但是set无序
        for(String key: names){
            System.out.println(key + " : " + map.get(key));
        }
        System.out.println("Invalid : " + invalid);
    }
}