
import java.util.Scanner;

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

		for (int i = 0; i < N; i++) {
			goods[i] = scan.nextInt();
			sum = sum + goods[i];
		}

		for (int i = 0; i < N; i++) {
			if(goods[i] >= sum * ((double) 1 / (4 * M))) {
				popular++;
			}
		}

		if (popular >= M) {
			System.out.println("Yes");
		} else {
			System.out.println("No");
		}
		scan.close();
	}
} import java.util.Scanner; Scanner java.util public class Main {
	public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);
		int N = scan.nextInt();
		int M = scan.nextInt();
		int goods[] = new int[N];
		int popular = 0;
		int sum = 0;

		for (int i = 0; i < N; i++) {
			goods[i] = scan.nextInt();
			sum = sum + goods[i];
		}

		for (int i = 0; i < N; i++) {
			if(goods[i] >= sum * ((double) 1 / (4 * M))) {
				popular++;
			}
		}

		if (popular >= M) {
			System.out.println("Yes");
		} else {
			System.out.println("No");
		}
		scan.close();
	}
} Main public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);
		int N = scan.nextInt();
		int M = scan.nextInt();
		int goods[] = new int[N];
		int popular = 0;
		int sum = 0;

		for (int i = 0; i < N; i++) {
			goods[i] = scan.nextInt();
			sum = sum + goods[i];
		}

		for (int i = 0; i < N; i++) {
			if(goods[i] >= sum * ((double) 1 / (4 * M))) {
				popular++;
			}
		}

		if (popular >= M) {
			System.out.println("Yes");
		} else {
			System.out.println("No");
		}
		scan.close();
	} main {
		Scanner scan = new Scanner(System.in);
		int N = scan.nextInt();
		int M = scan.nextInt();
		int goods[] = new int[N];
		int popular = 0;
		int sum = 0;

		for (int i = 0; i < N; i++) {
			goods[i] = scan.nextInt();
			sum = sum + goods[i];
		}

		for (int i = 0; i < N; i++) {
			if(goods[i] >= sum * ((double) 1 / (4 * M))) {
				popular++;
			}
		}

		if (popular >= M) {
			System.out.println("Yes");
		} else {
			System.out.println("No");
		}
		scan.close();
	} Scanner scan = new Scanner(System.in); scan new Scanner(System.in) int N = scan.nextInt(); N scan.nextInt() scan.nextInt scan int M = scan.nextInt(); M scan.nextInt() scan.nextInt scan int goods[] = new int[N]; goods new int[N] N int popular = 0; popular 0 int sum = 0; sum 0 for (int i = 0; i < N; i++) {
			goods[i] = scan.nextInt();
			sum = sum + goods[i];
		} int i = 0; int i = 0; i 0 i < N i N i++ i++ i {
			goods[i] = scan.nextInt();
			sum = sum + goods[i];
		} {
			goods[i] = scan.nextInt();
			sum = sum + goods[i];
		} goods[i] = scan.nextInt() goods[i] goods i scan.nextInt() scan.nextInt scan sum = sum + goods[i] sum sum + goods[i] sum goods[i] goods i for (int i = 0; i < N; i++) {
			if(goods[i] >= sum * ((double) 1 / (4 * M))) {
				popular++;
			}
		} int i = 0; int i = 0; i 0 i < N i N i++ i++ i {
			if(goods[i] >= sum * ((double) 1 / (4 * M))) {
				popular++;
			}
		} {
			if(goods[i] >= sum * ((double) 1 / (4 * M))) {
				popular++;
			}
		} if(goods[i] >= sum * ((double) 1 / (4 * M))) {
				popular++;
			} goods[i] >= sum * ((double) 1 / (4 * M)) goods[i] goods i sum * ((double) 1 / (4 * M)) sum ((double) 1 / (4 * M)) (double) 1 (4 * M) 4 M {
				popular++;
			} popular++ popular if (popular >= M) {
			System.out.println("Yes");
		} else {
			System.out.println("No");
		} popular >= M popular 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" scan.close() scan.close scan String[] args args public class Main {
	public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);
		int N = scan.nextInt();
		int M = scan.nextInt();
		int goods[] = new int[N];
		int popular = 0;
		int sum = 0;

		for (int i = 0; i < N; i++) {
			goods[i] = scan.nextInt();
			sum = sum + goods[i];
		}

		for (int i = 0; i < N; i++) {
			if(goods[i] >= sum * ((double) 1 / (4 * M))) {
				popular++;
			}
		}

		if (popular >= M) {
			System.out.println("Yes");
		} else {
			System.out.println("No");
		}
		scan.close();
	}
} public class Main {
	public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);
		int N = scan.nextInt();
		int M = scan.nextInt();
		int goods[] = new int[N];
		int popular = 0;
		int sum = 0;

		for (int i = 0; i < N; i++) {
			goods[i] = scan.nextInt();
			sum = sum + goods[i];
		}

		for (int i = 0; i < N; i++) {
			if(goods[i] >= sum * ((double) 1 / (4 * M))) {
				popular++;
			}
		}

		if (popular >= M) {
			System.out.println("Yes");
		} else {
			System.out.println("No");
		}
		scan.close();
	}
} Main

import java.util.Scanner;

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

		for (int i = 0; i < N; i++) {
			goods[i] = scan.nextInt();
			sum = sum + goods[i];
		}

		for (int i = 0; i < N; i++) {
			if(goods[i] >= sum * ((double) 1 / (4 * M))) {
				popular++;
			}
		}

		if (popular >= M) {
			System.out.println("Yes");
		} else {
			System.out.println("No");
		}
		scan.close();
	}
}
