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#include <bits/stdc++.h>
using namespace std;

#define boost                     \
    ios_base::sync_with_stdio(0); \
    cin.tie(0);                   \
    cout.tie(0)


int main() {
    boost;

    int n, k; cin >> n >> k;
    vector<int> a(n);

    for (int i = 0; i < n; ++i) cin >> a[i];
    sort(a.begin(), a.end(), std::greater<>());

    int pos = k;
    while(pos < n && a[pos] == a[pos - 1]) ++pos;

    cout << pos << '\n';

    return 0;
}