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

public class Main {

	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);
		int N = Integer.parseInt(sc.next());
		int M = Integer.parseInt(sc.next());
		boolean judge = true;
		int voteSum = 0;
		Integer[] arrayA = new Integer[N];

		for (int i = 0; i < N; i++) {
			arrayA[i] = Integer.parseInt(sc.next());
			voteSum += arrayA[i];
		}
		sc.close();
		//降順にソートする
		Arrays.sort(arrayA, Comparator.reverseOrder());

		for (int i = 0; i < M; i++) {
			//総投票数の1/4M未満であるか
			if (4 * M * arrayA[i] < voteSum ) {
				judge = false;
				break;
			}
		}
		System.out.println(judge ? "Yes" : "No");
	}
} import java.util.Arrays; Arrays java.util import java.util.Comparator; Comparator 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 = Integer.parseInt(sc.next());
		int M = Integer.parseInt(sc.next());
		boolean judge = true;
		int voteSum = 0;
		Integer[] arrayA = new Integer[N];

		for (int i = 0; i < N; i++) {
			arrayA[i] = Integer.parseInt(sc.next());
			voteSum += arrayA[i];
		}
		sc.close();
		//降順にソートする
		Arrays.sort(arrayA, Comparator.reverseOrder());

		for (int i = 0; i < M; i++) {
			//総投票数の1/4M未満であるか
			if (4 * M * arrayA[i] < voteSum ) {
				judge = false;
				break;
			}
		}
		System.out.println(judge ? "Yes" : "No");
	}
} Main public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);
		int N = Integer.parseInt(sc.next());
		int M = Integer.parseInt(sc.next());
		boolean judge = true;
		int voteSum = 0;
		Integer[] arrayA = new Integer[N];

		for (int i = 0; i < N; i++) {
			arrayA[i] = Integer.parseInt(sc.next());
			voteSum += arrayA[i];
		}
		sc.close();
		//降順にソートする
		Arrays.sort(arrayA, Comparator.reverseOrder());

		for (int i = 0; i < M; i++) {
			//総投票数の1/4M未満であるか
			if (4 * M * arrayA[i] < voteSum ) {
				judge = false;
				break;
			}
		}
		System.out.println(judge ? "Yes" : "No");
	} main {

		Scanner sc = new Scanner(System.in);
		int N = Integer.parseInt(sc.next());
		int M = Integer.parseInt(sc.next());
		boolean judge = true;
		int voteSum = 0;
		Integer[] arrayA = new Integer[N];

		for (int i = 0; i < N; i++) {
			arrayA[i] = Integer.parseInt(sc.next());
			voteSum += arrayA[i];
		}
		sc.close();
		//降順にソートする
		Arrays.sort(arrayA, Comparator.reverseOrder());

		for (int i = 0; i < M; i++) {
			//総投票数の1/4M未満であるか
			if (4 * M * arrayA[i] < voteSum ) {
				judge = false;
				break;
			}
		}
		System.out.println(judge ? "Yes" : "No");
	} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int N = Integer.parseInt(sc.next()); N Integer.parseInt(sc.next()) Integer.parseInt Integer sc.next() sc.next sc int M = Integer.parseInt(sc.next()); M Integer.parseInt(sc.next()) Integer.parseInt Integer sc.next() sc.next sc boolean judge = true; judge true int voteSum = 0; voteSum 0 Integer[] arrayA = new Integer[N]; arrayA new Integer[N] N for (int i = 0; i < N; i++) {
			arrayA[i] = Integer.parseInt(sc.next());
			voteSum += arrayA[i];
		} int i = 0; int i = 0; i 0 i < N i N i++ i++ i {
			arrayA[i] = Integer.parseInt(sc.next());
			voteSum += arrayA[i];
		} {
			arrayA[i] = Integer.parseInt(sc.next());
			voteSum += arrayA[i];
		} arrayA[i] = Integer.parseInt(sc.next()) arrayA[i] arrayA i Integer.parseInt(sc.next()) Integer.parseInt Integer sc.next() sc.next sc voteSum += arrayA[i] voteSum arrayA[i] arrayA i sc.close() sc.close sc Arrays.sort(arrayA, Comparator.reverseOrder()) Arrays.sort Arrays arrayA Comparator.reverseOrder() Comparator.reverseOrder Comparator for (int i = 0; i < M; i++) {
			//総投票数の1/4M未満であるか
			if (4 * M * arrayA[i] < voteSum ) {
				judge = false;
				break;
			}
		} int i = 0; int i = 0; i 0 i < M i M i++ i++ i {
			//総投票数の1/4M未満であるか
			if (4 * M * arrayA[i] < voteSum ) {
				judge = false;
				break;
			}
		} {
			//総投票数の1/4M未満であるか
			if (4 * M * arrayA[i] < voteSum ) {
				judge = false;
				break;
			}
		} if (4 * M * arrayA[i] < voteSum ) {
				judge = false;
				break;
			} 4 * M * arrayA[i] < voteSum 4 * M * arrayA[i] 4 * M * arrayA[i] 4 M arrayA[i] arrayA i voteSum {
				judge = false;
				break;
			} judge = false judge false break; System.out.println(judge ? "Yes" : "No") System.out.println System.out System System.out judge ? "Yes" : "No" judge "Yes" "No" String[] args args public class Main {

	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);
		int N = Integer.parseInt(sc.next());
		int M = Integer.parseInt(sc.next());
		boolean judge = true;
		int voteSum = 0;
		Integer[] arrayA = new Integer[N];

		for (int i = 0; i < N; i++) {
			arrayA[i] = Integer.parseInt(sc.next());
			voteSum += arrayA[i];
		}
		sc.close();
		//降順にソートする
		Arrays.sort(arrayA, Comparator.reverseOrder());

		for (int i = 0; i < M; i++) {
			//総投票数の1/4M未満であるか
			if (4 * M * arrayA[i] < voteSum ) {
				judge = false;
				break;
			}
		}
		System.out.println(judge ? "Yes" : "No");
	}
} public class Main {

	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);
		int N = Integer.parseInt(sc.next());
		int M = Integer.parseInt(sc.next());
		boolean judge = true;
		int voteSum = 0;
		Integer[] arrayA = new Integer[N];

		for (int i = 0; i < N; i++) {
			arrayA[i] = Integer.parseInt(sc.next());
			voteSum += arrayA[i];
		}
		sc.close();
		//降順にソートする
		Arrays.sort(arrayA, Comparator.reverseOrder());

		for (int i = 0; i < M; i++) {
			//総投票数の1/4M未満であるか
			if (4 * M * arrayA[i] < voteSum ) {
				judge = false;
				break;
			}
		}
		System.out.println(judge ? "Yes" : "No");
	}
} Main
import java.util.Arrays;
import java.util.Comparator;
import java.util.Scanner;

public class Main {

	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);
		int N = Integer.parseInt(sc.next());
		int M = Integer.parseInt(sc.next());
		boolean judge = true;
		int voteSum = 0;
		Integer[] arrayA = new Integer[N];

		for (int i = 0; i < N; i++) {
			arrayA[i] = Integer.parseInt(sc.next());
			voteSum += arrayA[i];
		}
		sc.close();
		//降順にソートする
		Arrays.sort(arrayA, Comparator.reverseOrder());

		for (int i = 0; i < M; i++) {
			//総投票数の1/4M未満であるか
			if (4 * M * arrayA[i] < voteSum ) {
				judge = false;
				break;
			}
		}
		System.out.println(judge ? "Yes" : "No");
	}
}