//

//  1018.cpp

//  oj

//

//  Created by PengFei_Zheng on 05/04/2017.

//  Copyright © 2017 PengFei_Zheng. All rights reserved.

//

//ios::sync_with_stdio(false);

#include <stdio.h>

#include <iostream>

#include <algorithm>

#include <string.h>

using namespace std;

int n,temp,grade;

int score[]={};

int main(){

    while(scanf("%d",&n)&&n!=){

        memset(score,,sizeof(score));

        for(int i =  ; i < n ; i++){

            scanf("%d",&temp);

            score[temp]++;

        }

        scanf("%d",&grade);

        printf("%d\n",score[grade]) ;

    }

}

/**************************************************************

    Problem: 1018

    User: zpfbuaa

    Language: C++

    Result: Accepted

    Time:10 ms

    Memory:1520 kb