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#include <bits/stdc++.h>
using namespace std;

int main()
{
    ios_base::sync_with_stdio(false);
int n,k; cin >> n >> k;
vector<int> v;
for(int i=0; i<n; i++)
{
    int a; cin >> a; v.push_back(a);
}

sort(v.begin(), v.end(), std::greater<>());

int tmp = 0;
for(int i=k; i<n; i++)
{
    if(v[i] == v[i-1])
        ++tmp;
    else
        break;
}

cout << k+tmp << std::endl;

}