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#include <iostream>
#include <vector>
#include <algorithm>
using namespace	std;

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

	int n, k;
	cin >> n >> k;
	vector <int> v(n);
	for (auto& x : v) cin >> x;

	sort(v.rbegin(), v.rend());
	int temp = 0;

	for (int i = k; i < n; i++) {
		if (v[i] == v[i - 1])
			temp++;
		else
			break;
	}
	cout << k+ temp << "\n";
}