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#include<bits/stdc++.h>
using namespace std;
int n, k;
vector<int> v;
int main()
{
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    cin >> n >> k;
    for (int i = 0; i < n; i++)
    {
        int a;
        cin >> a;
        v.push_back(a);
    }
    sort(v.begin(), v.end());
    reverse(v.begin(), v.end());
    int i;
    for (i = k; i < n; i++)
    {
        if (v[i] != v[i - 1])
            break;
    }
    cout << i << "\n";
    return 0;
}