
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 all = 0;
        for(int i=0;i<N;i++){
            a[i] = sc.nextInt();
            all += a[i];
        }
        int count = 0;
        for(int i=0;i<N;i++) {
            if (a[i] >= (all * 0.25f / M)) {
                count++;
            }
        }
        System.out.println(count >= 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 all = 0;
        for(int i=0;i<N;i++){
            a[i] = sc.nextInt();
            all += a[i];
        }
        int count = 0;
        for(int i=0;i<N;i++) {
            if (a[i] >= (all * 0.25f / M)) {
                count++;
            }
        }
        System.out.println(count >= 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 all = 0;
        for(int i=0;i<N;i++){
            a[i] = sc.nextInt();
            all += a[i];
        }
        int count = 0;
        for(int i=0;i<N;i++) {
            if (a[i] >= (all * 0.25f / M)) {
                count++;
            }
        }
        System.out.println(count >= M ? "Yes" : "No");
    } main {
        Scanner sc = new Scanner(System.in);
        int N = sc.nextInt();
        int M = sc.nextInt();
        int[] a = new int[N];
        int all = 0;
        for(int i=0;i<N;i++){
            a[i] = sc.nextInt();
            all += a[i];
        }
        int count = 0;
        for(int i=0;i<N;i++) {
            if (a[i] >= (all * 0.25f / M)) {
                count++;
            }
        }
        System.out.println(count >= 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 all = 0; all 0 for(int i=0;i<N;i++){
            a[i] = sc.nextInt();
            all += a[i];
        } int i=0; int i=0; i 0 i<N i N i++ i++ i {
            a[i] = sc.nextInt();
            all += a[i];
        } {
            a[i] = sc.nextInt();
            all += a[i];
        } a[i] = sc.nextInt() a[i] a i sc.nextInt() sc.nextInt sc all += a[i] all a[i] a i int count = 0; count 0 for(int i=0;i<N;i++) {
            if (a[i] >= (all * 0.25f / M)) {
                count++;
            }
        } int i=0; int i=0; i 0 i<N i N i++ i++ i {
            if (a[i] >= (all * 0.25f / M)) {
                count++;
            }
        } {
            if (a[i] >= (all * 0.25f / M)) {
                count++;
            }
        } if (a[i] >= (all * 0.25f / M)) {
                count++;
            } a[i] >= (all * 0.25f / M) a[i] a i (all * 0.25f / M) all * 0.25f all 0.25f M {
                count++;
            } count++ count System.out.println(count >= M ? "Yes" : "No") System.out.println System.out System System.out count >= M ? "Yes" : "No" count >= M count 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 all = 0;
        for(int i=0;i<N;i++){
            a[i] = sc.nextInt();
            all += a[i];
        }
        int count = 0;
        for(int i=0;i<N;i++) {
            if (a[i] >= (all * 0.25f / M)) {
                count++;
            }
        }
        System.out.println(count >= 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 all = 0;
        for(int i=0;i<N;i++){
            a[i] = sc.nextInt();
            all += a[i];
        }
        int count = 0;
        for(int i=0;i<N;i++) {
            if (a[i] >= (all * 0.25f / M)) {
                count++;
            }
        }
        System.out.println(count >= 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 all = 0;
        for(int i=0;i<N;i++){
            a[i] = sc.nextInt();
            all += a[i];
        }
        int count = 0;
        for(int i=0;i<N;i++) {
            if (a[i] >= (all * 0.25f / M)) {
                count++;
            }
        }
        System.out.println(count >= M ? "Yes" : "No");
    }
}
