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#include <bits/stdc++.h>
using namespace std;
int n, k;
vector<int> v;
int main(){
    ios_base::sync_with_stdio(false);
    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());
    while (v[k] == v[k - 1]) k++;
    cout << k;
}