import java.util.Scanner;


public class Main {


	public static void main(String[] args) {

		long ans = 0;
//		double ans = 0.0;
//		int ans = 0;
//		String ans = "";

		Scanner sc = new Scanner(System.in);
//		double waru = 1000000007;


//		long k = sc.nextLong();
//		long m = sc.nextLong();
//		long n = sc.nextLong();

		int n = sc.nextInt();
		int m = sc.nextInt();
//		int k = sc.nextInt();
//		String s = sc.next();


//		String string = sc.next();

//		StringBuilder s = new StringBuilder(string);

//		String[] strArray = string.split("");

		boolean f = false;

//		String[] s = new String[n];

		int[] a = new int[n];
//		int[] b = new int[n];
//		int[][] a = new int[n][m];

//		long[] p = new long[a];
//		long[] q = new long[b];
//		long[] r = new long[c];

//		ArrayList<Long> list = new ArrayList<>();

		int count = 0;
		for (int i = 0; i < n; i++) {
			a[i]= sc.nextInt();
			count += a[i];
		}


//		for (int i = 0; i < h; i++) {
//			for(int j = 0; j < w; j++) {
//				a[i][j] = sc.nextInt();
//			}
//		}

//		Arrays.sort(a);
		System.err.println(count);
		for(int i = 0; i < n ; i++) {

			double tmp = (double) count / (4*m);
			System.err.println(a[i]+" "+tmp);
			if(a[i] < tmp) {

			} else {
				ans++;
				if(ans >= m) {
					f = true;
					break;
				}
			}
		}



		if(f) {
			System.out.println("Yes");
		} else {
			System.out.println("No");
		}




//		System.out.println(ans);

		sc.close();
	}
} import java.util.Scanner; Scanner java.util public class Main {


	public static void main(String[] args) {

		long ans = 0;
//		double ans = 0.0;
//		int ans = 0;
//		String ans = "";

		Scanner sc = new Scanner(System.in);
//		double waru = 1000000007;


//		long k = sc.nextLong();
//		long m = sc.nextLong();
//		long n = sc.nextLong();

		int n = sc.nextInt();
		int m = sc.nextInt();
//		int k = sc.nextInt();
//		String s = sc.next();


//		String string = sc.next();

//		StringBuilder s = new StringBuilder(string);

//		String[] strArray = string.split("");

		boolean f = false;

//		String[] s = new String[n];

		int[] a = new int[n];
//		int[] b = new int[n];
//		int[][] a = new int[n][m];

//		long[] p = new long[a];
//		long[] q = new long[b];
//		long[] r = new long[c];

//		ArrayList<Long> list = new ArrayList<>();

		int count = 0;
		for (int i = 0; i < n; i++) {
			a[i]= sc.nextInt();
			count += a[i];
		}


//		for (int i = 0; i < h; i++) {
//			for(int j = 0; j < w; j++) {
//				a[i][j] = sc.nextInt();
//			}
//		}

//		Arrays.sort(a);
		System.err.println(count);
		for(int i = 0; i < n ; i++) {

			double tmp = (double) count / (4*m);
			System.err.println(a[i]+" "+tmp);
			if(a[i] < tmp) {

			} else {
				ans++;
				if(ans >= m) {
					f = true;
					break;
				}
			}
		}



		if(f) {
			System.out.println("Yes");
		} else {
			System.out.println("No");
		}




//		System.out.println(ans);

		sc.close();
	}
} Main public static void main(String[] args) {

		long ans = 0;
//		double ans = 0.0;
//		int ans = 0;
//		String ans = "";

		Scanner sc = new Scanner(System.in);
//		double waru = 1000000007;


//		long k = sc.nextLong();
//		long m = sc.nextLong();
//		long n = sc.nextLong();

		int n = sc.nextInt();
		int m = sc.nextInt();
//		int k = sc.nextInt();
//		String s = sc.next();


//		String string = sc.next();

//		StringBuilder s = new StringBuilder(string);

//		String[] strArray = string.split("");

		boolean f = false;

//		String[] s = new String[n];

		int[] a = new int[n];
//		int[] b = new int[n];
//		int[][] a = new int[n][m];

//		long[] p = new long[a];
//		long[] q = new long[b];
//		long[] r = new long[c];

//		ArrayList<Long> list = new ArrayList<>();

		int count = 0;
		for (int i = 0; i < n; i++) {
			a[i]= sc.nextInt();
			count += a[i];
		}


//		for (int i = 0; i < h; i++) {
//			for(int j = 0; j < w; j++) {
//				a[i][j] = sc.nextInt();
//			}
//		}

//		Arrays.sort(a);
		System.err.println(count);
		for(int i = 0; i < n ; i++) {

			double tmp = (double) count / (4*m);
			System.err.println(a[i]+" "+tmp);
			if(a[i] < tmp) {

			} else {
				ans++;
				if(ans >= m) {
					f = true;
					break;
				}
			}
		}



		if(f) {
			System.out.println("Yes");
		} else {
			System.out.println("No");
		}




//		System.out.println(ans);

		sc.close();
	} main {

		long ans = 0;
//		double ans = 0.0;
//		int ans = 0;
//		String ans = "";

		Scanner sc = new Scanner(System.in);
//		double waru = 1000000007;


//		long k = sc.nextLong();
//		long m = sc.nextLong();
//		long n = sc.nextLong();

		int n = sc.nextInt();
		int m = sc.nextInt();
//		int k = sc.nextInt();
//		String s = sc.next();


//		String string = sc.next();

//		StringBuilder s = new StringBuilder(string);

//		String[] strArray = string.split("");

		boolean f = false;

//		String[] s = new String[n];

		int[] a = new int[n];
//		int[] b = new int[n];
//		int[][] a = new int[n][m];

//		long[] p = new long[a];
//		long[] q = new long[b];
//		long[] r = new long[c];

//		ArrayList<Long> list = new ArrayList<>();

		int count = 0;
		for (int i = 0; i < n; i++) {
			a[i]= sc.nextInt();
			count += a[i];
		}


//		for (int i = 0; i < h; i++) {
//			for(int j = 0; j < w; j++) {
//				a[i][j] = sc.nextInt();
//			}
//		}

//		Arrays.sort(a);
		System.err.println(count);
		for(int i = 0; i < n ; i++) {

			double tmp = (double) count / (4*m);
			System.err.println(a[i]+" "+tmp);
			if(a[i] < tmp) {

			} else {
				ans++;
				if(ans >= m) {
					f = true;
					break;
				}
			}
		}



		if(f) {
			System.out.println("Yes");
		} else {
			System.out.println("No");
		}




//		System.out.println(ans);

		sc.close();
	} long ans = 0; ans 0 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 boolean f = false; f false int[] a = new int[n]; a new int[n] n int count = 0; count 0 for (int i = 0; i < n; i++) {
			a[i]= sc.nextInt();
			count += a[i];
		} int i = 0; int i = 0; i 0 i < n i n i++ i++ i {
			a[i]= sc.nextInt();
			count += a[i];
		} {
			a[i]= sc.nextInt();
			count += a[i];
		} a[i]= sc.nextInt() a[i] a i sc.nextInt() sc.nextInt sc count += a[i] count a[i] a i System.err.println(count) System.err.println System.err System System.err count for(int i = 0; i < n ; i++) {

			double tmp = (double) count / (4*m);
			System.err.println(a[i]+" "+tmp);
			if(a[i] < tmp) {

			} else {
				ans++;
				if(ans >= m) {
					f = true;
					break;
				}
			}
		} int i = 0; int i = 0; i 0 i < n i n i++ i++ i {

			double tmp = (double) count / (4*m);
			System.err.println(a[i]+" "+tmp);
			if(a[i] < tmp) {

			} else {
				ans++;
				if(ans >= m) {
					f = true;
					break;
				}
			}
		} {

			double tmp = (double) count / (4*m);
			System.err.println(a[i]+" "+tmp);
			if(a[i] < tmp) {

			} else {
				ans++;
				if(ans >= m) {
					f = true;
					break;
				}
			}
		} double tmp = (double) count / (4*m); tmp (double) count / (4*m) (double) count (4*m) 4 m System.err.println(a[i]+" "+tmp) System.err.println System.err System System.err a[i]+" "+tmp a[i]+" "+tmp a[i] a i " " tmp if(a[i] < tmp) {

			} else {
				ans++;
				if(ans >= m) {
					f = true;
					break;
				}
			} a[i] < tmp a[i] a i tmp {

			} {
				ans++;
				if(ans >= m) {
					f = true;
					break;
				}
			} ans++ ans if(ans >= m) {
					f = true;
					break;
				} ans >= m ans m {
					f = true;
					break;
				} f = true f true break; if(f) {
			System.out.println("Yes");
		} else {
			System.out.println("No");
		} f {
			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" sc.close() sc.close sc String[] args args public class Main {


	public static void main(String[] args) {

		long ans = 0;
//		double ans = 0.0;
//		int ans = 0;
//		String ans = "";

		Scanner sc = new Scanner(System.in);
//		double waru = 1000000007;


//		long k = sc.nextLong();
//		long m = sc.nextLong();
//		long n = sc.nextLong();

		int n = sc.nextInt();
		int m = sc.nextInt();
//		int k = sc.nextInt();
//		String s = sc.next();


//		String string = sc.next();

//		StringBuilder s = new StringBuilder(string);

//		String[] strArray = string.split("");

		boolean f = false;

//		String[] s = new String[n];

		int[] a = new int[n];
//		int[] b = new int[n];
//		int[][] a = new int[n][m];

//		long[] p = new long[a];
//		long[] q = new long[b];
//		long[] r = new long[c];

//		ArrayList<Long> list = new ArrayList<>();

		int count = 0;
		for (int i = 0; i < n; i++) {
			a[i]= sc.nextInt();
			count += a[i];
		}


//		for (int i = 0; i < h; i++) {
//			for(int j = 0; j < w; j++) {
//				a[i][j] = sc.nextInt();
//			}
//		}

//		Arrays.sort(a);
		System.err.println(count);
		for(int i = 0; i < n ; i++) {

			double tmp = (double) count / (4*m);
			System.err.println(a[i]+" "+tmp);
			if(a[i] < tmp) {

			} else {
				ans++;
				if(ans >= m) {
					f = true;
					break;
				}
			}
		}



		if(f) {
			System.out.println("Yes");
		} else {
			System.out.println("No");
		}




//		System.out.println(ans);

		sc.close();
	}
} public class Main {


	public static void main(String[] args) {

		long ans = 0;
//		double ans = 0.0;
//		int ans = 0;
//		String ans = "";

		Scanner sc = new Scanner(System.in);
//		double waru = 1000000007;


//		long k = sc.nextLong();
//		long m = sc.nextLong();
//		long n = sc.nextLong();

		int n = sc.nextInt();
		int m = sc.nextInt();
//		int k = sc.nextInt();
//		String s = sc.next();


//		String string = sc.next();

//		StringBuilder s = new StringBuilder(string);

//		String[] strArray = string.split("");

		boolean f = false;

//		String[] s = new String[n];

		int[] a = new int[n];
//		int[] b = new int[n];
//		int[][] a = new int[n][m];

//		long[] p = new long[a];
//		long[] q = new long[b];
//		long[] r = new long[c];

//		ArrayList<Long> list = new ArrayList<>();

		int count = 0;
		for (int i = 0; i < n; i++) {
			a[i]= sc.nextInt();
			count += a[i];
		}


//		for (int i = 0; i < h; i++) {
//			for(int j = 0; j < w; j++) {
//				a[i][j] = sc.nextInt();
//			}
//		}

//		Arrays.sort(a);
		System.err.println(count);
		for(int i = 0; i < n ; i++) {

			double tmp = (double) count / (4*m);
			System.err.println(a[i]+" "+tmp);
			if(a[i] < tmp) {

			} else {
				ans++;
				if(ans >= m) {
					f = true;
					break;
				}
			}
		}



		if(f) {
			System.out.println("Yes");
		} else {
			System.out.println("No");
		}




//		System.out.println(ans);

		sc.close();
	}
} Main
import java.util.Scanner;


public class Main {


	public static void main(String[] args) {

		long ans = 0;
//		double ans = 0.0;
//		int ans = 0;
//		String ans = "";

		Scanner sc = new Scanner(System.in);
//		double waru = 1000000007;


//		long k = sc.nextLong();
//		long m = sc.nextLong();
//		long n = sc.nextLong();

		int n = sc.nextInt();
		int m = sc.nextInt();
//		int k = sc.nextInt();
//		String s = sc.next();


//		String string = sc.next();

//		StringBuilder s = new StringBuilder(string);

//		String[] strArray = string.split("");

		boolean f = false;

//		String[] s = new String[n];

		int[] a = new int[n];
//		int[] b = new int[n];
//		int[][] a = new int[n][m];

//		long[] p = new long[a];
//		long[] q = new long[b];
//		long[] r = new long[c];

//		ArrayList<Long> list = new ArrayList<>();

		int count = 0;
		for (int i = 0; i < n; i++) {
			a[i]= sc.nextInt();
			count += a[i];
		}


//		for (int i = 0; i < h; i++) {
//			for(int j = 0; j < w; j++) {
//				a[i][j] = sc.nextInt();
//			}
//		}

//		Arrays.sort(a);
		System.err.println(count);
		for(int i = 0; i < n ; i++) {

			double tmp = (double) count / (4*m);
			System.err.println(a[i]+" "+tmp);
			if(a[i] < tmp) {

			} else {
				ans++;
				if(ans >= m) {
					f = true;
					break;
				}
			}
		}



		if(f) {
			System.out.println("Yes");
		} else {
			System.out.println("No");
		}




//		System.out.println(ans);

		sc.close();
	}
}