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/******************************************************************************

Welcome to GDB Online.
GDB online is an online compiler and debugger tool for C, C++, Python, Java, PHP, Ruby, Perl,
C#, VB, Swift, Pascal, Fortran, Haskell, Objective-C, Assembly, HTML, CSS, JS, SQLite, Prolog.
Code, Compile, Run and Debug online from anywhere in world.

*******************************************************************************/
#include <iostream>
#include <algorithm>
#include <vector>

using namespace std;

int last(vector<int> a, int n, int x)
{
    int l = 0, r = n - 1;
    
    int res = -1;
 
    while (l <= r){
        int m = (l + r)/2;
 
        if (x == a[m]){
            res = m;
            l = m + 1;
        }else if (x < a[m]) {
            l = m + 1;
        }else {
            r = m - 1;
        }
    }
 
    return res;
}
 

int main()
{
    int n, k;
    cin >> n >> k;
    vector<int> a;
    
    for(int i=0; i<n; i++){
        int x;
        cin >> x;
        a.push_back(x);
    }
    
    sort(a.begin(), a.end(), greater<int>());
    
    int last_pos = last(a, n, a[k-1]);
    
    cout << last_pos+1;
}