Submission #7578340

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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();
    }
    Arrays.sort(R);
    
    double rate = 0;
    for (int i = N-K; i < N; i++) {
      rate = (double)(rate + R[i])/2;
    }
    
    System.out.println(rate);
  }
}

Submission Info

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