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

public class Main {
	public static void main(String args[]) {
		Scanner sc = new Scanner(System.in);
		
		int N = sc.nextInt();
		int M = sc.nextInt();
		int[] votes = new int[N];
		for (int i = 0; i < N; i++) {
			votes[i] = sc.nextInt();
		}
		
		Arrays.sort(votes);
		
		int totalScores = 0;
		for (int i = 0; i < N; i++) {
			totalScores += votes[i];
		}
		
		for (int i = 0; i < M; i++) {
			if (votes[N - (i + 1)] * 4 * M < totalScores) {
				System.out.println("No");
				return;			
			}
		}
		
		System.out.println("Yes");

	}
} import java.util.Scanner; Scanner java.util import java.util.Arrays; Arrays 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[] votes = new int[N];
		for (int i = 0; i < N; i++) {
			votes[i] = sc.nextInt();
		}
		
		Arrays.sort(votes);
		
		int totalScores = 0;
		for (int i = 0; i < N; i++) {
			totalScores += votes[i];
		}
		
		for (int i = 0; i < M; i++) {
			if (votes[N - (i + 1)] * 4 * M < totalScores) {
				System.out.println("No");
				return;			
			}
		}
		
		System.out.println("Yes");

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

	} main {
		Scanner sc = new Scanner(System.in);
		
		int N = sc.nextInt();
		int M = sc.nextInt();
		int[] votes = new int[N];
		for (int i = 0; i < N; i++) {
			votes[i] = sc.nextInt();
		}
		
		Arrays.sort(votes);
		
		int totalScores = 0;
		for (int i = 0; i < N; i++) {
			totalScores += votes[i];
		}
		
		for (int i = 0; i < M; i++) {
			if (votes[N - (i + 1)] * 4 * M < totalScores) {
				System.out.println("No");
				return;			
			}
		}
		
		System.out.println("Yes");

	} 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[] votes = new int[N]; votes new int[N] N for (int i = 0; i < N; i++) {
			votes[i] = sc.nextInt();
		} int i = 0; int i = 0; i 0 i < N i N i++ i++ i {
			votes[i] = sc.nextInt();
		} {
			votes[i] = sc.nextInt();
		} votes[i] = sc.nextInt() votes[i] votes i sc.nextInt() sc.nextInt sc Arrays.sort(votes) Arrays.sort Arrays votes int totalScores = 0; totalScores 0 for (int i = 0; i < N; i++) {
			totalScores += votes[i];
		} int i = 0; int i = 0; i 0 i < N i N i++ i++ i {
			totalScores += votes[i];
		} {
			totalScores += votes[i];
		} totalScores += votes[i] totalScores votes[i] votes i for (int i = 0; i < M; i++) {
			if (votes[N - (i + 1)] * 4 * M < totalScores) {
				System.out.println("No");
				return;			
			}
		} int i = 0; int i = 0; i 0 i < M i M i++ i++ i {
			if (votes[N - (i + 1)] * 4 * M < totalScores) {
				System.out.println("No");
				return;			
			}
		} {
			if (votes[N - (i + 1)] * 4 * M < totalScores) {
				System.out.println("No");
				return;			
			}
		} if (votes[N - (i + 1)] * 4 * M < totalScores) {
				System.out.println("No");
				return;			
			} votes[N - (i + 1)] * 4 * M < totalScores votes[N - (i + 1)] * 4 * M votes[N - (i + 1)] * 4 * M votes[N - (i + 1)] votes N - (i + 1) N (i + 1) i 1 4 M totalScores {
				System.out.println("No");
				return;			
			} System.out.println("No") System.out.println System.out System System.out "No" return; 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[]) {
		Scanner sc = new Scanner(System.in);
		
		int N = sc.nextInt();
		int M = sc.nextInt();
		int[] votes = new int[N];
		for (int i = 0; i < N; i++) {
			votes[i] = sc.nextInt();
		}
		
		Arrays.sort(votes);
		
		int totalScores = 0;
		for (int i = 0; i < N; i++) {
			totalScores += votes[i];
		}
		
		for (int i = 0; i < M; i++) {
			if (votes[N - (i + 1)] * 4 * M < totalScores) {
				System.out.println("No");
				return;			
			}
		}
		
		System.out.println("Yes");

	}
} public class Main {
	public static void main(String args[]) {
		Scanner sc = new Scanner(System.in);
		
		int N = sc.nextInt();
		int M = sc.nextInt();
		int[] votes = new int[N];
		for (int i = 0; i < N; i++) {
			votes[i] = sc.nextInt();
		}
		
		Arrays.sort(votes);
		
		int totalScores = 0;
		for (int i = 0; i < N; i++) {
			totalScores += votes[i];
		}
		
		for (int i = 0; i < M; i++) {
			if (votes[N - (i + 1)] * 4 * M < totalScores) {
				System.out.println("No");
				return;			
			}
		}
		
		System.out.println("Yes");

	}
} Main
import java.util.Scanner;
import java.util.Arrays;

public class Main {
	public static void main(String args[]) {
		Scanner sc = new Scanner(System.in);
		
		int N = sc.nextInt();
		int M = sc.nextInt();
		int[] votes = new int[N];
		for (int i = 0; i < N; i++) {
			votes[i] = sc.nextInt();
		}
		
		Arrays.sort(votes);
		
		int totalScores = 0;
		for (int i = 0; i < N; i++) {
			totalScores += votes[i];
		}
		
		for (int i = 0; i < M; i++) {
			if (votes[N - (i + 1)] * 4 * M < totalScores) {
				System.out.println("No");
				return;			
			}
		}
		
		System.out.println("Yes");

	}
}