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#include<algorithm>
#include<iostream>
#include<vector>

using namespace std;

int main()
{
	ios_base::sync_with_stdio(false);
	cin.tie(0);

	int n, k; cin >> n >> k;
	vector<int> a(n);
	for (int i = 0; i < n; i++) 
		cin >> a[i];
	sort(a.rbegin(), a.rend());
	int ans = k;
	while (ans < n and a[ans] == a[k - 1])
		ans++;
	cout << ans << "\n";
}