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();
		double mark = (double)1/((4*m));
		int count = 0;
		int total = 0;
		int[] arr = new int[n];
		for(int i = 0;i<n;i++)
		{
			arr[i] = sc.nextInt();
			total += arr[i];
		}
		for(int i = 0;i<n;i++)
		{
			int votes = arr[i];
			if(votes >= (total * mark))
				count++;
		}
		System.out.println(count>=m?"Yes":"No");
	}
} 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();
		double mark = (double)1/((4*m));
		int count = 0;
		int total = 0;
		int[] arr = new int[n];
		for(int i = 0;i<n;i++)
		{
			arr[i] = sc.nextInt();
			total += arr[i];
		}
		for(int i = 0;i<n;i++)
		{
			int votes = arr[i];
			if(votes >= (total * mark))
				count++;
		}
		System.out.println(count>=m?"Yes":"No");
	}
} Main public static void main(String[] args)
	{
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		int m = sc.nextInt();
		double mark = (double)1/((4*m));
		int count = 0;
		int total = 0;
		int[] arr = new int[n];
		for(int i = 0;i<n;i++)
		{
			arr[i] = sc.nextInt();
			total += arr[i];
		}
		for(int i = 0;i<n;i++)
		{
			int votes = arr[i];
			if(votes >= (total * mark))
				count++;
		}
		System.out.println(count>=m?"Yes":"No");
	} main {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		int m = sc.nextInt();
		double mark = (double)1/((4*m));
		int count = 0;
		int total = 0;
		int[] arr = new int[n];
		for(int i = 0;i<n;i++)
		{
			arr[i] = sc.nextInt();
			total += arr[i];
		}
		for(int i = 0;i<n;i++)
		{
			int votes = arr[i];
			if(votes >= (total * mark))
				count++;
		}
		System.out.println(count>=m?"Yes":"No");
	} 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 double mark = (double)1/((4*m)); mark (double)1/((4*m)) (double)1 ((4*m)) 4 m int count = 0; count 0 int total = 0; total 0 int[] arr = new int[n]; arr new int[n] n for(int i = 0;i<n;i++)
		{
			arr[i] = sc.nextInt();
			total += arr[i];
		} int i = 0; int i = 0; i 0 i<n i n i++ i++ i {
			arr[i] = sc.nextInt();
			total += arr[i];
		} {
			arr[i] = sc.nextInt();
			total += arr[i];
		} arr[i] = sc.nextInt() arr[i] arr i sc.nextInt() sc.nextInt sc total += arr[i] total arr[i] arr i for(int i = 0;i<n;i++)
		{
			int votes = arr[i];
			if(votes >= (total * mark))
				count++;
		} int i = 0; int i = 0; i 0 i<n i n i++ i++ i {
			int votes = arr[i];
			if(votes >= (total * mark))
				count++;
		} {
			int votes = arr[i];
			if(votes >= (total * mark))
				count++;
		} int votes = arr[i]; votes arr[i] arr i if(votes >= (total * mark))
				count++; votes >= (total * mark) votes (total * mark) total mark count++ count System.out.println(count>=m?"Yes":"No") System.out.println System.out System System.out count>=m?"Yes":"No" count>=m count m "Yes" "No" 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();
		double mark = (double)1/((4*m));
		int count = 0;
		int total = 0;
		int[] arr = new int[n];
		for(int i = 0;i<n;i++)
		{
			arr[i] = sc.nextInt();
			total += arr[i];
		}
		for(int i = 0;i<n;i++)
		{
			int votes = arr[i];
			if(votes >= (total * mark))
				count++;
		}
		System.out.println(count>=m?"Yes":"No");
	}
} public class Main{
	public static void main(String[] args)
	{
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		int m = sc.nextInt();
		double mark = (double)1/((4*m));
		int count = 0;
		int total = 0;
		int[] arr = new int[n];
		for(int i = 0;i<n;i++)
		{
			arr[i] = sc.nextInt();
			total += arr[i];
		}
		for(int i = 0;i<n;i++)
		{
			int votes = arr[i];
			if(votes >= (total * mark))
				count++;
		}
		System.out.println(count>=m?"Yes":"No");
	}
} 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();
		double mark = (double)1/((4*m));
		int count = 0;
		int total = 0;
		int[] arr = new int[n];
		for(int i = 0;i<n;i++)
		{
			arr[i] = sc.nextInt();
			total += arr[i];
		}
		for(int i = 0;i<n;i++)
		{
			int votes = arr[i];
			if(votes >= (total * mark))
				count++;
		}
		System.out.println(count>=m?"Yes":"No");
	}
}