题解 | #机器翻译#

import java.util.LinkedList;
import java.util.Queue;
import java.util.Scanner;
public class Main {
    public static void main(String []args){
    Scanner sc = new Scanner(System.in);
    int m = sc.nextInt();
    int n = sc.nextInt();
    int ans = 0;
    int sum = 0;
    Queue<Integer>queue = new LinkedList<Integer>();
    for(int i = 0;i<n;i++){
        int danci = sc.nextInt();
        boolean flag = false;
        for(int chaxun:queue){
            if(chaxun==danci){
                flag = true;
                break;
            }
        }
        if(!flag){
            if(ans==m){
                sum+=1;
                queue.poll();
                queue.add(danci);
            }else{
                sum+=1;
                ans = ans+1;
                queue.add(danci);
            }
        }
    }
    System.out.print(sum);
    


}
}