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#include<bits/stdc++.h>
using namespace std;
typedef long double ld;
typedef long long ll;
#define rep(a, b) for(int a = 0; a < (b); ++a)
#define st first
#define nd second
#define pb push_back
#define all(a) a.begin(), a.end()
const int LIM=1e5+7;
int T[LIM];
int32_t main() {
	ios_base::sync_with_stdio(0); cin.tie(0);
	int n, k;
	cin >> n >> k; --k;
	int ans=k;
	rep(i, n) cin >> T[i];
	sort(T, T+n);
	reverse(T, T+n);
	while(T[ans]==T[k]) ++ans;
	cout << ans << '\n';
}