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#include <iostream>
#include <algorithm>
using namespace std;

int main() {
	short n, k, answer;
	cin >> n >> k;
	answer = k;
	char arr[n];
	for(char& j : arr)
		scanf("%hhi", &j);

	sort(arr, arr+n, greater<short>());

	char last_given = arr[k-1];
	for(char* i = arr+k; i < arr+n && *i == last_given; ++i)
		answer++;
	cout << answer << '\n';
}