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#include <iostream>
#include "bits/stdc++.h"

using namespace  std;
int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);

    int n, k;
    cin >> n >> k;
    vector<int> v;
    for (int i = 0; i < n; ++i) {
        int x;
        cin >> x;
        v.push_back(x);
    }

    sort(v.begin(), v.end());

    int p = n - k;
    while(p > 0 && v[p-1] == v[p]) {
        p--;
        k++;
    }
    cout << k;
    return 0;
}