#include <iostream>
#include <algorithm>
#include <cstdio>
#define ll long long
#define eps 1e-9
#define PI 2 * acos (0.0)
#define mod 1000000007
using namespace std;

int bs(int *st,int *en,int val,char c) // en = size+1
{
    int k;
    //first element not less than val,else returns last
    if(c=='l') k=lower_bound(st,en,val)-st;
    //first element greater than val,else returns last
    if(c=='u') k=upper_bound(st,en,val)-st;
    return k;
}

int prime[78500];
int sieve() // RETURNS ACTUAL SIZE!!! NOT SIZE+1!!!! REMEMBER WELL!! >_<
{
    int a,b,c;
    c=0; prime[c]=2;
    bool *m=(bool *)calloc(1000006,sizeof(bool));
    for(a=3;a<=1000000;a=a+2)
    {
        if(!m[a])
        {
            prime[++c]=a;
            for(b=2*a;b<=1000000;b=b+a) m[b]=true;
        }
    }
    free(m);
    return c;
}

// inverse mod of i%prime = bigmod(i,prime-2)
ll bigmod(ll i,ll pow)
{
    if(pow<1) return 1;
    if(pow==1) return i%mod;
    ll j;
    if(pow%2)
    {
        j=(i*bigmod(i,pow-1))%mod;
    }
    else
    {
        j=bigmod(i,pow/2);
        j=(j*j)%mod;
    }
    return j;
}

int cnt[100005];
int ar[100005];

int main()
{

   // freopen("0.in","r",stdin);
   // freopen("0.out","w",stdout);

    /*
    cout << fixed << setprecision(4);
    std::ios::sync_with_stdio(false);

    */

    int a,b,c,d,e,x,y,z,n,t;

    while(scanf("%d",&n)==1)
    {
        //cin>>n;

        for(a=0;a<=100;a++) cnt[a]=0;

        for(a=0;a<n;a++)
        {
            cin>>ar[a];
            cnt[ar[a]]++;
        }

        cin>>y;

        while(y--)
        {
            for(a=0;a<n;a++)
            {
                if(cnt[ar[a]]>1){ cnt[ar[a]]--; break; }
            }
            if(a==n)
            {
                for(a=0;a<n;a++)
                {
                    if(cnt[ar[a]]>=1){ cnt[ar[a]]--; break; }
                }
            }
        }
        y=0;
        for(a=0;a<=100;a++) if(cnt[a]) y++;
        cout<<y<<endl;
    }

    return 0;
}