import java.util.Scanner;

public class Main {
	public static void main(String[] args){
		Scanner stdIn = new Scanner(System.in);
		int N = stdIn.nextInt();
		int M = stdIn.nextInt();
		int A[] = new int[N];
		int sum = 0;
		int ans = 0;

		for(int a = 0; a < N; a++){
			A[a] = stdIn.nextInt();
			sum += A[a];
		}

		for(int b = 0; b < N; b++){
			if(A[b] >= sum / 4.0 / M){
				ans++;
			}
		}
		if(ans >= M){
			System.out.println("Yes");
		}
		else{
			System.out.println("No");
		}
		stdIn.close();
	}
} import java.util.Scanner; Scanner java.util public class Main {
	public static void main(String[] args){
		Scanner stdIn = new Scanner(System.in);
		int N = stdIn.nextInt();
		int M = stdIn.nextInt();
		int A[] = new int[N];
		int sum = 0;
		int ans = 0;

		for(int a = 0; a < N; a++){
			A[a] = stdIn.nextInt();
			sum += A[a];
		}

		for(int b = 0; b < N; b++){
			if(A[b] >= sum / 4.0 / M){
				ans++;
			}
		}
		if(ans >= M){
			System.out.println("Yes");
		}
		else{
			System.out.println("No");
		}
		stdIn.close();
	}
} Main public static void main(String[] args){
		Scanner stdIn = new Scanner(System.in);
		int N = stdIn.nextInt();
		int M = stdIn.nextInt();
		int A[] = new int[N];
		int sum = 0;
		int ans = 0;

		for(int a = 0; a < N; a++){
			A[a] = stdIn.nextInt();
			sum += A[a];
		}

		for(int b = 0; b < N; b++){
			if(A[b] >= sum / 4.0 / M){
				ans++;
			}
		}
		if(ans >= M){
			System.out.println("Yes");
		}
		else{
			System.out.println("No");
		}
		stdIn.close();
	} main {
		Scanner stdIn = new Scanner(System.in);
		int N = stdIn.nextInt();
		int M = stdIn.nextInt();
		int A[] = new int[N];
		int sum = 0;
		int ans = 0;

		for(int a = 0; a < N; a++){
			A[a] = stdIn.nextInt();
			sum += A[a];
		}

		for(int b = 0; b < N; b++){
			if(A[b] >= sum / 4.0 / M){
				ans++;
			}
		}
		if(ans >= M){
			System.out.println("Yes");
		}
		else{
			System.out.println("No");
		}
		stdIn.close();
	} 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 int ans = 0; ans 0 for(int a = 0; a < N; a++){
			A[a] = stdIn.nextInt();
			sum += A[a];
		} int a = 0; int a = 0; a 0 a < N a N a++ a++ a {
			A[a] = stdIn.nextInt();
			sum += A[a];
		} {
			A[a] = stdIn.nextInt();
			sum += A[a];
		} A[a] = stdIn.nextInt() A[a] A a stdIn.nextInt() stdIn.nextInt stdIn sum += A[a] sum A[a] A a for(int b = 0; b < N; b++){
			if(A[b] >= sum / 4.0 / M){
				ans++;
			}
		} int b = 0; int b = 0; b 0 b < N b N b++ b++ b {
			if(A[b] >= sum / 4.0 / M){
				ans++;
			}
		} {
			if(A[b] >= sum / 4.0 / M){
				ans++;
			}
		} if(A[b] >= sum / 4.0 / M){
				ans++;
			} A[b] >= sum / 4.0 / M A[b] A b sum / 4.0 / M sum / 4.0 / M sum 4.0 M {
				ans++;
			} ans++ ans if(ans >= M){
			System.out.println("Yes");
		}
		else{
			System.out.println("No");
		} ans >= M ans M {
			System.out.println("Yes");
		} System.out.println("Yes") System.out.println System.out System System.out "Yes" {
			System.out.println("No");
		} System.out.println("No") System.out.println System.out System System.out "No" stdIn.close() stdIn.close stdIn String[] args args public class Main {
	public static void main(String[] args){
		Scanner stdIn = new Scanner(System.in);
		int N = stdIn.nextInt();
		int M = stdIn.nextInt();
		int A[] = new int[N];
		int sum = 0;
		int ans = 0;

		for(int a = 0; a < N; a++){
			A[a] = stdIn.nextInt();
			sum += A[a];
		}

		for(int b = 0; b < N; b++){
			if(A[b] >= sum / 4.0 / M){
				ans++;
			}
		}
		if(ans >= M){
			System.out.println("Yes");
		}
		else{
			System.out.println("No");
		}
		stdIn.close();
	}
} public class Main {
	public static void main(String[] args){
		Scanner stdIn = new Scanner(System.in);
		int N = stdIn.nextInt();
		int M = stdIn.nextInt();
		int A[] = new int[N];
		int sum = 0;
		int ans = 0;

		for(int a = 0; a < N; a++){
			A[a] = stdIn.nextInt();
			sum += A[a];
		}

		for(int b = 0; b < N; b++){
			if(A[b] >= sum / 4.0 / M){
				ans++;
			}
		}
		if(ans >= M){
			System.out.println("Yes");
		}
		else{
			System.out.println("No");
		}
		stdIn.close();
	}
} Main
import java.util.Scanner;

public class Main {
	public static void main(String[] args){
		Scanner stdIn = new Scanner(System.in);
		int N = stdIn.nextInt();
		int M = stdIn.nextInt();
		int A[] = new int[N];
		int sum = 0;
		int ans = 0;

		for(int a = 0; a < N; a++){
			A[a] = stdIn.nextInt();
			sum += A[a];
		}

		for(int b = 0; b < N; b++){
			if(A[b] >= sum / 4.0 / M){
				ans++;
			}
		}
		if(ans >= M){
			System.out.println("Yes");
		}
		else{
			System.out.println("No");
		}
		stdIn.close();
	}
}