import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.Arrays;
import java.util.Collections;
import java.util.StringTokenizer;

public class Back_25305 {
    public static void main(String[] args) throws IOException {

        // given
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        StringTokenizer st = new StringTokenizer(br.readLine());
        int N = Integer.parseInt(st.nextToken());
        int K = Integer.parseInt(st.nextToken());
        Integer score[] = new Integer[N];
        // when
        st = new StringTokenizer(br.readLine());
        for (int i = 0; i < N; i++) {
            score[i] = Integer.parseInt(st.nextToken());
        }

        // 내림차순
        Arrays.sort(score, Collections.reverseOrder());
        System.out.println(score[K-1]);
        // then
        br.close();


    }
}