import java.util.Arrays;
import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int N = sc.nextInt();
		int M = sc.nextInt();
		int[] A = new int[N];
		int total = 0;
		for(int i = 0; i < N; i++) {
			A[i] = sc.nextInt();
			total += A[i];
		}
		sc.close();
		Arrays.sort(A);
		for(int i = N - 1; i > N - M - 1; i--) {
			if(total <= 4 * M * A[i] && i == N - M) {
				System.out.println("Yes");
				break;
			}
			if(total > 4 * M * A[i]){
				System.out.println("No");
				break;
			}
		}
	}
} import java.util.Arrays; Arrays java.util import java.util.Scanner; Scanner 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[] A = new int[N];
		int total = 0;
		for(int i = 0; i < N; i++) {
			A[i] = sc.nextInt();
			total += A[i];
		}
		sc.close();
		Arrays.sort(A);
		for(int i = N - 1; i > N - M - 1; i--) {
			if(total <= 4 * M * A[i] && i == N - M) {
				System.out.println("Yes");
				break;
			}
			if(total > 4 * M * A[i]){
				System.out.println("No");
				break;
			}
		}
	}
} Main public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int N = sc.nextInt();
		int M = sc.nextInt();
		int[] A = new int[N];
		int total = 0;
		for(int i = 0; i < N; i++) {
			A[i] = sc.nextInt();
			total += A[i];
		}
		sc.close();
		Arrays.sort(A);
		for(int i = N - 1; i > N - M - 1; i--) {
			if(total <= 4 * M * A[i] && i == N - M) {
				System.out.println("Yes");
				break;
			}
			if(total > 4 * M * A[i]){
				System.out.println("No");
				break;
			}
		}
	} main {
		Scanner sc = new Scanner(System.in);
		int N = sc.nextInt();
		int M = sc.nextInt();
		int[] A = new int[N];
		int total = 0;
		for(int i = 0; i < N; i++) {
			A[i] = sc.nextInt();
			total += A[i];
		}
		sc.close();
		Arrays.sort(A);
		for(int i = N - 1; i > N - M - 1; i--) {
			if(total <= 4 * M * A[i] && i == N - M) {
				System.out.println("Yes");
				break;
			}
			if(total > 4 * M * A[i]){
				System.out.println("No");
				break;
			}
		}
	} 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[] A = new int[N]; A new int[N] N int total = 0; total 0 for(int i = 0; i < N; i++) {
			A[i] = sc.nextInt();
			total += A[i];
		} int i = 0; int i = 0; i 0 i < N i N i++ i++ i {
			A[i] = sc.nextInt();
			total += A[i];
		} {
			A[i] = sc.nextInt();
			total += A[i];
		} A[i] = sc.nextInt() A[i] A i sc.nextInt() sc.nextInt sc total += A[i] total A[i] A i sc.close() sc.close sc Arrays.sort(A) Arrays.sort Arrays A for(int i = N - 1; i > N - M - 1; i--) {
			if(total <= 4 * M * A[i] && i == N - M) {
				System.out.println("Yes");
				break;
			}
			if(total > 4 * M * A[i]){
				System.out.println("No");
				break;
			}
		} int i = N - 1; int i = N - 1; i N - 1 N 1 i > N - M - 1 i N - M - 1 N - M - 1 N M 1 i-- i-- i {
			if(total <= 4 * M * A[i] && i == N - M) {
				System.out.println("Yes");
				break;
			}
			if(total > 4 * M * A[i]){
				System.out.println("No");
				break;
			}
		} {
			if(total <= 4 * M * A[i] && i == N - M) {
				System.out.println("Yes");
				break;
			}
			if(total > 4 * M * A[i]){
				System.out.println("No");
				break;
			}
		} if(total <= 4 * M * A[i] && i == N - M) {
				System.out.println("Yes");
				break;
			} total <= 4 * M * A[i] && i == N - M total <= 4 * M * A[i] total 4 * M * A[i] 4 * M * A[i] 4 M A[i] A i i == N - M i N - M N M {
				System.out.println("Yes");
				break;
			} System.out.println("Yes") System.out.println System.out System System.out "Yes" break; if(total > 4 * M * A[i]){
				System.out.println("No");
				break;
			} total > 4 * M * A[i] total 4 * M * A[i] 4 * M * A[i] 4 M A[i] A i {
				System.out.println("No");
				break;
			} System.out.println("No") System.out.println System.out System System.out "No" break; 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[] A = new int[N];
		int total = 0;
		for(int i = 0; i < N; i++) {
			A[i] = sc.nextInt();
			total += A[i];
		}
		sc.close();
		Arrays.sort(A);
		for(int i = N - 1; i > N - M - 1; i--) {
			if(total <= 4 * M * A[i] && i == N - M) {
				System.out.println("Yes");
				break;
			}
			if(total > 4 * M * A[i]){
				System.out.println("No");
				break;
			}
		}
	}
} public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int N = sc.nextInt();
		int M = sc.nextInt();
		int[] A = new int[N];
		int total = 0;
		for(int i = 0; i < N; i++) {
			A[i] = sc.nextInt();
			total += A[i];
		}
		sc.close();
		Arrays.sort(A);
		for(int i = N - 1; i > N - M - 1; i--) {
			if(total <= 4 * M * A[i] && i == N - M) {
				System.out.println("Yes");
				break;
			}
			if(total > 4 * M * A[i]){
				System.out.println("No");
				break;
			}
		}
	}
} Main
import java.util.Arrays;
import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int N = sc.nextInt();
		int M = sc.nextInt();
		int[] A = new int[N];
		int total = 0;
		for(int i = 0; i < N; i++) {
			A[i] = sc.nextInt();
			total += A[i];
		}
		sc.close();
		Arrays.sort(A);
		for(int i = N - 1; i > N - M - 1; i--) {
			if(total <= 4 * M * A[i] && i == N - M) {
				System.out.println("Yes");
				break;
			}
			if(total > 4 * M * A[i]){
				System.out.println("No");
				break;
			}
		}
	}
}
