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#include <iostream>
#include <vector>
#include <functional>
#include <climits>

using namespace std;

int main()
{
    int n; cin>>n;
    int k; cin>>k;
    vector<int> a(n); for(auto &x : a) cin>>x;
    sort(a.begin(), a.end(), greater<int>());
    int i;
    for(i=k-1; i<n; i++)
        if(i==n-1||a[i]!=a[i+1])
            break;
    cout<<i+1;
    return 0;
}