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 num_popular_item = 0;
        int total_votes = 0;
        for (int i=0; i<N; i++) {
            A[i] = sc.nextInt();
            total_votes += A[i];
        }
        double r = 0.25 / M;
        for (int i=0; i<N; i++) {
            if (A[i] >= total_votes * r) {
                num_popular_item += 1;
            }
        }
        if (num_popular_item >= M) {
            System.out.println("Yes");
        } else {
            System.out.println("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 num_popular_item = 0;
        int total_votes = 0;
        for (int i=0; i<N; i++) {
            A[i] = sc.nextInt();
            total_votes += A[i];
        }
        double r = 0.25 / M;
        for (int i=0; i<N; i++) {
            if (A[i] >= total_votes * r) {
                num_popular_item += 1;
            }
        }
        if (num_popular_item >= M) {
            System.out.println("Yes");
        } else {
            System.out.println("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 num_popular_item = 0;
        int total_votes = 0;
        for (int i=0; i<N; i++) {
            A[i] = sc.nextInt();
            total_votes += A[i];
        }
        double r = 0.25 / M;
        for (int i=0; i<N; i++) {
            if (A[i] >= total_votes * r) {
                num_popular_item += 1;
            }
        }
        if (num_popular_item >= M) {
            System.out.println("Yes");
        } else {
            System.out.println("No");
        }
    } main {
        Scanner sc = new Scanner(System.in);
        int N = sc.nextInt();
        int M = sc.nextInt();
        int A[] = new int[N];
        int num_popular_item = 0;
        int total_votes = 0;
        for (int i=0; i<N; i++) {
            A[i] = sc.nextInt();
            total_votes += A[i];
        }
        double r = 0.25 / M;
        for (int i=0; i<N; i++) {
            if (A[i] >= total_votes * r) {
                num_popular_item += 1;
            }
        }
        if (num_popular_item >= M) {
            System.out.println("Yes");
        } else {
            System.out.println("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 num_popular_item = 0; num_popular_item 0 int total_votes = 0; total_votes 0 for (int i=0; i<N; i++) {
            A[i] = sc.nextInt();
            total_votes += A[i];
        } int i=0; int i=0; i 0 i<N i N i++ i++ i {
            A[i] = sc.nextInt();
            total_votes += A[i];
        } {
            A[i] = sc.nextInt();
            total_votes += A[i];
        } A[i] = sc.nextInt() A[i] A i sc.nextInt() sc.nextInt sc total_votes += A[i] total_votes A[i] A i double r = 0.25 / M; r 0.25 / M 0.25 M for (int i=0; i<N; i++) {
            if (A[i] >= total_votes * r) {
                num_popular_item += 1;
            }
        } int i=0; int i=0; i 0 i<N i N i++ i++ i {
            if (A[i] >= total_votes * r) {
                num_popular_item += 1;
            }
        } {
            if (A[i] >= total_votes * r) {
                num_popular_item += 1;
            }
        } if (A[i] >= total_votes * r) {
                num_popular_item += 1;
            } A[i] >= total_votes * r A[i] A i total_votes * r total_votes r {
                num_popular_item += 1;
            } num_popular_item += 1 num_popular_item 1 if (num_popular_item >= M) {
            System.out.println("Yes");
        } else {
            System.out.println("No");
        } num_popular_item >= M num_popular_item 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" 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 num_popular_item = 0;
        int total_votes = 0;
        for (int i=0; i<N; i++) {
            A[i] = sc.nextInt();
            total_votes += A[i];
        }
        double r = 0.25 / M;
        for (int i=0; i<N; i++) {
            if (A[i] >= total_votes * r) {
                num_popular_item += 1;
            }
        }
        if (num_popular_item >= M) {
            System.out.println("Yes");
        } else {
            System.out.println("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 num_popular_item = 0;
        int total_votes = 0;
        for (int i=0; i<N; i++) {
            A[i] = sc.nextInt();
            total_votes += A[i];
        }
        double r = 0.25 / M;
        for (int i=0; i<N; i++) {
            if (A[i] >= total_votes * r) {
                num_popular_item += 1;
            }
        }
        if (num_popular_item >= M) {
            System.out.println("Yes");
        } else {
            System.out.println("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 num_popular_item = 0;
        int total_votes = 0;
        for (int i=0; i<N; i++) {
            A[i] = sc.nextInt();
            total_votes += A[i];
        }
        double r = 0.25 / M;
        for (int i=0; i<N; i++) {
            if (A[i] >= total_votes * r) {
                num_popular_item += 1;
            }
        }
        if (num_popular_item >= M) {
            System.out.println("Yes");
        } else {
            System.out.println("No");
        }
    }
}