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#include <bits/stdc++.h>

using namespace std;

#define ALL(x) (x).begin(), (x).end()

template<class C> void mini(C &a5, C b5) { a5 = min(a5, b5); }
template<class C> void maxi(C &a5, C b5) { a5 = max(a5, b5); }

#ifdef LOCAL
const bool debug = true;
#else
const bool debug = false;
#define cerr if (true) {} else cout
#endif

#define int long long
#define double long double

const int INF = 1e18;
const int mod = 1e9 + 7;

int32_t main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    
    int n, k;
    cin >> n >> k;
    
    vector<int> v;
    for (int i = 0; i < n; i++) {
		int a;
		cin >> a;
		v.push_back(a);
	}
	
	sort(ALL(v));
	reverse(ALL(v));
	
	while (k < n && v[k] == v[k - 1]) {
		k++;
	}
	
	cout << k << "\n";
    
    return 0;
}/*

*/