#line 1 "main.cpp"
#include <iostream>
#include <algorithm>
#include <vector>

using namespace std;

void solve() {
    int n, k;
    cin >> n >> k;

    vector<int> xs(n);
    for (auto& x : xs) cin >> x;
    xs.push_back(-1);
    sort(xs.rbegin(), xs.rend());

    int i = k - 1;
    while (i >= 0 && xs[i] == xs[k]) --i;
    cout << i + 1 << "\n";
}

int main() {
    cin.tie(nullptr);
    ios::sync_with_stdio(false);

    solve();

    return 0;
}