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#include <iostream>
#include<vector>
#include<algorithm>

using namespace std;

int main()
{

    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 suma = k;

    while (v[n-k] == v[n-k-1] && k < n) {
        suma = suma + 1;
        k++;
    }

    cout << suma;
}