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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> a(n);
    
    for (auto &x : a) {
        cin >> x;
    }

    sort(a.begin(), a.end(), [](auto x, auto y) { return x > y;});

    while (k < n and a[k] == a[k - 1]) {
        k++; 
    }

    cout << k << "\n";
}