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);
        int n=in.nextInt();
        String[] people=new String[n];
        HashMap<String,Integer> map=new HashMap<>();        
        for(int i=0;i<n;i++){
            people[i]=in.next();
            map.put(people[i],0);
        }
        int m=in.nextInt();
        String[] select=new String[m];
        for(int i=0;i<m;i++){
            select[i]=in.next();
            if(map.containsKey(select[i])){
                map.put(select[i],map.get(select[i])+1);
                // System.out.println(select[i]+" == "+map.get(select[i]));
            }
        }
        int sum=0;
        for(int i=0;i<n;i++){
            sum+=map.get(people[i]);
            System.out.println(people[i]+" : "+map.get(people[i]));
        }
        System.out.println("Invalid : "+(m-sum));
    }
}