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#include<bits/stdc++.h>

using namespace std;
typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;

#define ST first
#define ND second
#define SIZE(a) ((int)a.size())


int main() {
    ios_base::sync_with_stdio(0);
    int n, k;
    cin >> n >> k;
    vector<int> a(n);
    for(int &a_i : a) {
        cin >> a_i;
    }
    sort(a.begin(), a.end());
    reverse(a.begin(), a.end());
    for(int i=k; i < n; i++) {
        if(a[i] == a[i-1]) {
            k++;
        } else {
            break;
        }
    }
    cout << k << "\n";
}