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#include <bits/stdc++.h>
using namespace std;
#define fi first
#define se second
#define pb push_back
#define all(x) (x).begin(), (x).end()
#define mid (l+r)/2
#define PI acos((ld)-1)
#define BOOST ios_base::sync_with_stdio(0), cin.tie(0), cout.tie(0)
typedef long long ll;
typedef long double ld;
typedef pair<int, int> ii;
typedef vector<int> vi;
typedef vector<ll> vll;
typedef vector<ii> vii;
typedef vector<vi> vvi;

const int N = 2e3+5;

int main(){
	BOOST;
	int n, k;
	cin >> n >> k;
	vi in(n);
	for(int i=0; i<n; i++)
		cin >> in[i];
	sort(all(in), greater<int>());
	while(k < n && in[k-1] == in[k])
		k++;
	cout << k;
}