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#include <bits/stdc++.h>

using namespace std;

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

	int n, k;
	cin>>n>>k;
	vector <int> v(n);
	for (auto& x: v) cin>>x;
	sort(v.begin(), v.end(), greater<int>());

	int ans = k;
	bool flag = true;
	for (int i = k; i < n && flag; i++) {
		if (v[i] == v[i-1]) ans++;
		else flag = false;
	}

	cout<<ans<<'\n';

	return 0;
}