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 wa = 0;
		for(int i = 0; i < N; i++) {
			A[i] = sc.nextInt();
			wa += A[i];
		}
		sc.close();
		// Arrays.sort(A);
		int ok = 0;
		for(int i = N - 1; i >= 0; i--) {
			ok += A[i] * (4 * M) >= wa ? 1 : 0;
			// System.out.println(ok + " " + A[i] + " " + nov);
		}
		System.out.println(ok >= M ? "Yes" : "No");
	}
} 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 wa = 0;
		for(int i = 0; i < N; i++) {
			A[i] = sc.nextInt();
			wa += A[i];
		}
		sc.close();
		// Arrays.sort(A);
		int ok = 0;
		for(int i = N - 1; i >= 0; i--) {
			ok += A[i] * (4 * M) >= wa ? 1 : 0;
			// System.out.println(ok + " " + A[i] + " " + nov);
		}
		System.out.println(ok >= M ? "Yes" : "No");
	}
} 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 wa = 0;
		for(int i = 0; i < N; i++) {
			A[i] = sc.nextInt();
			wa += A[i];
		}
		sc.close();
		// Arrays.sort(A);
		int ok = 0;
		for(int i = N - 1; i >= 0; i--) {
			ok += A[i] * (4 * M) >= wa ? 1 : 0;
			// System.out.println(ok + " " + A[i] + " " + nov);
		}
		System.out.println(ok >= M ? "Yes" : "No");
	} main {
		Scanner sc = new Scanner(System.in);
		int N = sc.nextInt();
		int M = sc.nextInt();
		int[] A = new int[N];
		int wa = 0;
		for(int i = 0; i < N; i++) {
			A[i] = sc.nextInt();
			wa += A[i];
		}
		sc.close();
		// Arrays.sort(A);
		int ok = 0;
		for(int i = N - 1; i >= 0; i--) {
			ok += A[i] * (4 * M) >= wa ? 1 : 0;
			// System.out.println(ok + " " + A[i] + " " + nov);
		}
		System.out.println(ok >= M ? "Yes" : "No");
	} 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 wa = 0; wa 0 for(int i = 0; i < N; i++) {
			A[i] = sc.nextInt();
			wa += A[i];
		} int i = 0; int i = 0; i 0 i < N i N i++ i++ i {
			A[i] = sc.nextInt();
			wa += A[i];
		} {
			A[i] = sc.nextInt();
			wa += A[i];
		} A[i] = sc.nextInt() A[i] A i sc.nextInt() sc.nextInt sc wa += A[i] wa A[i] A i sc.close() sc.close sc int ok = 0; ok 0 for(int i = N - 1; i >= 0; i--) {
			ok += A[i] * (4 * M) >= wa ? 1 : 0;
			// System.out.println(ok + " " + A[i] + " " + nov);
		} int i = N - 1; int i = N - 1; i N - 1 N 1 i >= 0 i 0 i-- i-- i {
			ok += A[i] * (4 * M) >= wa ? 1 : 0;
			// System.out.println(ok + " " + A[i] + " " + nov);
		} {
			ok += A[i] * (4 * M) >= wa ? 1 : 0;
			// System.out.println(ok + " " + A[i] + " " + nov);
		} ok += A[i] * (4 * M) >= wa ? 1 : 0 ok A[i] * (4 * M) >= wa ? 1 : 0 A[i] * (4 * M) >= wa A[i] * (4 * M) A[i] A i (4 * M) 4 M wa 1 0 System.out.println(ok >= M ? "Yes" : "No") System.out.println System.out System System.out ok >= M ? "Yes" : "No" ok >= M ok M "Yes" "No" 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 wa = 0;
		for(int i = 0; i < N; i++) {
			A[i] = sc.nextInt();
			wa += A[i];
		}
		sc.close();
		// Arrays.sort(A);
		int ok = 0;
		for(int i = N - 1; i >= 0; i--) {
			ok += A[i] * (4 * M) >= wa ? 1 : 0;
			// System.out.println(ok + " " + A[i] + " " + nov);
		}
		System.out.println(ok >= M ? "Yes" : "No");
	}
} 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 wa = 0;
		for(int i = 0; i < N; i++) {
			A[i] = sc.nextInt();
			wa += A[i];
		}
		sc.close();
		// Arrays.sort(A);
		int ok = 0;
		for(int i = N - 1; i >= 0; i--) {
			ok += A[i] * (4 * M) >= wa ? 1 : 0;
			// System.out.println(ok + " " + A[i] + " " + nov);
		}
		System.out.println(ok >= M ? "Yes" : "No");
	}
} Main
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 wa = 0;
		for(int i = 0; i < N; i++) {
			A[i] = sc.nextInt();
			wa += A[i];
		}
		sc.close();
		// Arrays.sort(A);
		int ok = 0;
		for(int i = N - 1; i >= 0; i--) {
			ok += A[i] * (4 * M) >= wa ? 1 : 0;
			// System.out.println(ok + " " + A[i] + " " + nov);
		}
		System.out.println(ok >= M ? "Yes" : "No");
	}
}
