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#include <bits/stdc++.h>

using namespace std;

int main()
{
    int n, k;
    scanf("%d%d", &n, &k);
    vector<int> a(n);
    for (int& x : a) scanf("%d", &x);
    sort(a.rbegin(), a.rend());
    while (k < n && a[k] == a[k - 1]) k++;
    printf("%d\n", k);
    return 0;
}