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

int main() {
  ios::sync_with_stdio(false);
  cin.tie(nullptr);

  int coders;
  int tshirts;
  cin >> coders >> tshirts;
  vector<int> results(coders);

  while (coders--) {
    cin >> results[coders];
  }

  sort(results.begin(), results.end());

  int ptr = results.size() - tshirts;
  while (ptr > 0 && results[ptr - 1] == results[ptr]) {
    tshirts++;
    ptr--;
  }

  cout << tshirts;
}