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);
  }
} import java.util.*; util.* java 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);
  }
} 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);
  } main {
    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);
  } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int n = sc.nextInt(); n sc.nextInt() sc.nextInt sc int m = sc.nextInt(); m sc.nextInt() sc.nextInt sc int[] voteList = new int[n]; voteList new int[n] n int totalV = 0; totalV 0 int chose = 0; chose 0 String ans = "No"; ans "No" for (int i = 0; i < n; i++){
      int a = sc.nextInt();
      totalV += a;
      voteList[i] = a;
    } int i = 0; int i = 0; i 0 i < n i n i++ i++ i {
      int a = sc.nextInt();
      totalV += a;
      voteList[i] = a;
    } {
      int a = sc.nextInt();
      totalV += a;
      voteList[i] = a;
    } int a = sc.nextInt(); a sc.nextInt() sc.nextInt sc totalV += a totalV a voteList[i] = a voteList[i] voteList i a int min = totalV/(4*m); min totalV/(4*m) totalV (4*m) 4 m if (totalV%(4*m) > 0){
      min++;
    } totalV%(4*m) > 0 totalV%(4*m) totalV (4*m) 4 m 0 {
      min++;
    } min++ min for (int i = 0; i < n; i++){
      if (voteList[i] >= min){
        chose++;
      }
      if (chose >= m){
        ans = "Yes";
        break;
      }
    } int i = 0; int i = 0; i 0 i < n i n i++ i++ i {
      if (voteList[i] >= min){
        chose++;
      }
      if (chose >= m){
        ans = "Yes";
        break;
      }
    } {
      if (voteList[i] >= min){
        chose++;
      }
      if (chose >= m){
        ans = "Yes";
        break;
      }
    } if (voteList[i] >= min){
        chose++;
      } voteList[i] >= min voteList[i] voteList i min {
        chose++;
      } chose++ chose if (chose >= m){
        ans = "Yes";
        break;
      } chose >= m chose m {
        ans = "Yes";
        break;
      } ans = "Yes" ans "Yes" break; System.out.println(ans) System.out.println System.out System System.out ans String args[] args 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);
  }
} 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);
  }
} Main
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);
  }
}