import java.util.Arrays;
import java.util.Scanner;
import java.math.BigDecimal;
public class Main {
	public static void main(String[] args)throws Exception{
		Scanner stdIn=new Scanner(System.in);
		int N=stdIn.nextInt();
		int M=stdIn.nextInt();
		int A[]=new int[N];
		int sum=0;
		for(int i=0;i<N;i++){
			A[i]=stdIn.nextInt();
			sum+=A[i];
		}
		Arrays.sort(A);
		for(int i=0;i<M;i++){
			if(A[N-i-1]*4*M<sum){
				System.out.println("No");
				System.exit(0);
			}
		}
		System.out.println("Yes");
	}
} import java.util.Arrays; Arrays java.util import java.util.Scanner; Scanner java.util import java.math.BigDecimal; BigDecimal java.math public class Main {
	public static void main(String[] args)throws Exception{
		Scanner stdIn=new Scanner(System.in);
		int N=stdIn.nextInt();
		int M=stdIn.nextInt();
		int A[]=new int[N];
		int sum=0;
		for(int i=0;i<N;i++){
			A[i]=stdIn.nextInt();
			sum+=A[i];
		}
		Arrays.sort(A);
		for(int i=0;i<M;i++){
			if(A[N-i-1]*4*M<sum){
				System.out.println("No");
				System.exit(0);
			}
		}
		System.out.println("Yes");
	}
} Main public static void main(String[] args)throws Exception{
		Scanner stdIn=new Scanner(System.in);
		int N=stdIn.nextInt();
		int M=stdIn.nextInt();
		int A[]=new int[N];
		int sum=0;
		for(int i=0;i<N;i++){
			A[i]=stdIn.nextInt();
			sum+=A[i];
		}
		Arrays.sort(A);
		for(int i=0;i<M;i++){
			if(A[N-i-1]*4*M<sum){
				System.out.println("No");
				System.exit(0);
			}
		}
		System.out.println("Yes");
	} main {
		Scanner stdIn=new Scanner(System.in);
		int N=stdIn.nextInt();
		int M=stdIn.nextInt();
		int A[]=new int[N];
		int sum=0;
		for(int i=0;i<N;i++){
			A[i]=stdIn.nextInt();
			sum+=A[i];
		}
		Arrays.sort(A);
		for(int i=0;i<M;i++){
			if(A[N-i-1]*4*M<sum){
				System.out.println("No");
				System.exit(0);
			}
		}
		System.out.println("Yes");
	} Scanner stdIn=new Scanner(System.in); stdIn new Scanner(System.in) int N=stdIn.nextInt(); N stdIn.nextInt() stdIn.nextInt stdIn int M=stdIn.nextInt(); M stdIn.nextInt() stdIn.nextInt stdIn int A[]=new int[N]; A new int[N] N int sum=0; sum 0 for(int i=0;i<N;i++){
			A[i]=stdIn.nextInt();
			sum+=A[i];
		} int i=0; int i=0; i 0 i<N i N i++ i++ i {
			A[i]=stdIn.nextInt();
			sum+=A[i];
		} {
			A[i]=stdIn.nextInt();
			sum+=A[i];
		} A[i]=stdIn.nextInt() A[i] A i stdIn.nextInt() stdIn.nextInt stdIn sum+=A[i] sum A[i] A i Arrays.sort(A) Arrays.sort Arrays A for(int i=0;i<M;i++){
			if(A[N-i-1]*4*M<sum){
				System.out.println("No");
				System.exit(0);
			}
		} int i=0; int i=0; i 0 i<M i M i++ i++ i {
			if(A[N-i-1]*4*M<sum){
				System.out.println("No");
				System.exit(0);
			}
		} {
			if(A[N-i-1]*4*M<sum){
				System.out.println("No");
				System.exit(0);
			}
		} if(A[N-i-1]*4*M<sum){
				System.out.println("No");
				System.exit(0);
			} A[N-i-1]*4*M<sum A[N-i-1]*4*M A[N-i-1]*4*M A[N-i-1] A N-i-1 N-i-1 N i 1 4 M sum {
				System.out.println("No");
				System.exit(0);
			} System.out.println("No") System.out.println System.out System System.out "No" System.exit(0) System.exit System 0 System.out.println("Yes") System.out.println System.out System System.out "Yes" String[] args args public class Main {
	public static void main(String[] args)throws Exception{
		Scanner stdIn=new Scanner(System.in);
		int N=stdIn.nextInt();
		int M=stdIn.nextInt();
		int A[]=new int[N];
		int sum=0;
		for(int i=0;i<N;i++){
			A[i]=stdIn.nextInt();
			sum+=A[i];
		}
		Arrays.sort(A);
		for(int i=0;i<M;i++){
			if(A[N-i-1]*4*M<sum){
				System.out.println("No");
				System.exit(0);
			}
		}
		System.out.println("Yes");
	}
} public class Main {
	public static void main(String[] args)throws Exception{
		Scanner stdIn=new Scanner(System.in);
		int N=stdIn.nextInt();
		int M=stdIn.nextInt();
		int A[]=new int[N];
		int sum=0;
		for(int i=0;i<N;i++){
			A[i]=stdIn.nextInt();
			sum+=A[i];
		}
		Arrays.sort(A);
		for(int i=0;i<M;i++){
			if(A[N-i-1]*4*M<sum){
				System.out.println("No");
				System.exit(0);
			}
		}
		System.out.println("Yes");
	}
} Main
import java.util.Arrays;
import java.util.Scanner;
import java.math.BigDecimal;
public class Main {
	public static void main(String[] args)throws Exception{
		Scanner stdIn=new Scanner(System.in);
		int N=stdIn.nextInt();
		int M=stdIn.nextInt();
		int A[]=new int[N];
		int sum=0;
		for(int i=0;i<N;i++){
			A[i]=stdIn.nextInt();
			sum+=A[i];
		}
		Arrays.sort(A);
		for(int i=0;i<M;i++){
			if(A[N-i-1]*4*M<sum){
				System.out.println("No");
				System.exit(0);
			}
		}
		System.out.println("Yes");
	}
}
