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#include <bits/stdc++.h>
using namespace std;
#define st first
#define nd second
#define pb push_back
#define mp make_pair
#define ll long long
#define ld long double
#define vc vector
#define mt make_tuple
int main()
{
  int n,k;
  cin>>n>>k;
  int tab[n];
  for(int i=0;i<n;i++)
  {
    cin>>tab[i];
  }
  sort(tab,tab+n,std::greater<int>());
  int wynik = tab[k-1];
  int licznik = k-1;
  while(tab[licznik]==wynik)
  {
    licznik++;
  }
  cout<<licznik;
  
  
}