1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
#include <iostream>
#include <array>

int solve() {
	int n = 0;
	int k = 0;
	std::cin >> n;
	std::cin >> k;

	std::array<int, 121> arr{};
	int a = 0;
	for (int i = 0; i < n; i++) {
		std::cin >> a;
		arr[a]++;
	}
	int sum = 0;
	for (int i = 120; i >= 0; i--) {
		sum += arr[i];
		if (sum >= k) {
			return sum;
		}
	}
	return -1;
}


int main() {
	int result = solve();
	std::cout << result;
}