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#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define pii pair<int,int>
#define pb push_back


int main()
{
	ios::sync_with_stdio(false); cin.tie(nullptr); 
	int n,k;
	cin >> n >> k;
	vector<int> v(n);
	
	for(int i=0;i<n;++i)
        cin >> v[i];
	sort(v.begin(),v.end());
    
    int ans=0;
    for(int i=n-1;i>=0;)
    {
        if(k<1)
            break;
        ans++;
        k--;
        i--;
        while(i>=0 && v[i]==v[i+1])
        {
            ans++;
            i--;
            k--;
        }
    }
    cout << ans << "\n";



	return 0;
}