import java.util.*;
public class Main{
  public static void main (String args[]){
    Scanner sc = new Scanner(System.in);
    
    int n = sc.nextInt();
    int m = sc.nextInt();
    int[] voteList = new int[n];
    int totalV = 0;
    int chose = 0;
    String ans = "No";
    
    for (int i = 0; i < n; i++){
      int a = sc.nextInt();
      totalV += a;
      voteList[i] = a;
    }
    
    int min = totalV/(4*m);
    
    if (totalV%(4*m) > 0){
      min++;
    }
    
    for (int i = 0; i < n; i++){
      if (voteList[i] >= min){
        chose++;
      }
      if (chose >= m){
        ans = "Yes";
        break;
      }
    }
    
    System.out.println(ans);
  }
}
/tmp/hf-datasets-cache/medium/datasets/42704881117311-config-parquet-and-info-qiankunmu-Project_CodeNet-896c9d36/hub/datasets--qiankunmu--Project_CodeNet_Python800_and_Java250/snapshots/c899fde44a77ba1cc14973ed3de064e4ff3aadc7/Project_CodeNet_Java250.tar.gz