Baekjoon 25305 커트라인

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.Scanner;

public class Baekjoon25305 {

     public static void main(String args[]){
        Scanner scanner = new Scanner(System.in);
        int n = scanner.nextInt();
        int k = scanner.nextInt();
        ArrayList<Integer> arr= new ArrayList<>();
        for(int i=0;i<n;i++)   arr.add(scanner.nextInt());
        scanner.close();
        Collections.sort(arr,Collections.reverseOrder());
        System.out.println(arr.get(k-1));
    }
    
}