Submission #122511

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Source Code Expand

import java.util.*;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		int k = sc.nextInt();
		int r[] = new int[n];
		for (int i = 0; i < n; i++) {
			r[i] = sc.nextInt(); 
		}
		sc.close();
		Arrays.sort(r);
		double ans = 0;
		
		for (int i = r.length - k; i < r.length; i++) {
			ans = (r[i] + ans)/2;
		}

		System.out.println(ans);
	}
}

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