import java.util.*;

public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int m = sc.nextInt();
        Integer[] a = new Integer[n];
        int votes = 0;
        
        for(int i=0; i<n; i++){
            a[i] = sc.nextInt();
            votes += a[i];
        }
        
        Arrays.sort(a, Collections.reverseOrder());
        
        for(int j=0; j<m; j++){
            if(a[j] < votes*((double)1/(4*m))){
                System.out.println("No");
                return;
            }
        }
        System.out.println("Yes");
    }
} import java.util.*; util.* java public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int m = sc.nextInt();
        Integer[] a = new Integer[n];
        int votes = 0;
        
        for(int i=0; i<n; i++){
            a[i] = sc.nextInt();
            votes += a[i];
        }
        
        Arrays.sort(a, Collections.reverseOrder());
        
        for(int j=0; j<m; j++){
            if(a[j] < votes*((double)1/(4*m))){
                System.out.println("No");
                return;
            }
        }
        System.out.println("Yes");
    }
} Main public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int m = sc.nextInt();
        Integer[] a = new Integer[n];
        int votes = 0;
        
        for(int i=0; i<n; i++){
            a[i] = sc.nextInt();
            votes += a[i];
        }
        
        Arrays.sort(a, Collections.reverseOrder());
        
        for(int j=0; j<m; j++){
            if(a[j] < votes*((double)1/(4*m))){
                System.out.println("No");
                return;
            }
        }
        System.out.println("Yes");
    } main {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int m = sc.nextInt();
        Integer[] a = new Integer[n];
        int votes = 0;
        
        for(int i=0; i<n; i++){
            a[i] = sc.nextInt();
            votes += a[i];
        }
        
        Arrays.sort(a, Collections.reverseOrder());
        
        for(int j=0; j<m; j++){
            if(a[j] < votes*((double)1/(4*m))){
                System.out.println("No");
                return;
            }
        }
        System.out.println("Yes");
    } 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 Integer[] a = new Integer[n]; a new Integer[n] n int votes = 0; votes 0 for(int i=0; i<n; i++){
            a[i] = sc.nextInt();
            votes += a[i];
        } int i=0; int i=0; i 0 i<n i n i++ i++ i {
            a[i] = sc.nextInt();
            votes += a[i];
        } {
            a[i] = sc.nextInt();
            votes += a[i];
        } a[i] = sc.nextInt() a[i] a i sc.nextInt() sc.nextInt sc votes += a[i] votes a[i] a i Arrays.sort(a, Collections.reverseOrder()) Arrays.sort Arrays a Collections.reverseOrder() Collections.reverseOrder Collections for(int j=0; j<m; j++){
            if(a[j] < votes*((double)1/(4*m))){
                System.out.println("No");
                return;
            }
        } int j=0; int j=0; j 0 j<m j m j++ j++ j {
            if(a[j] < votes*((double)1/(4*m))){
                System.out.println("No");
                return;
            }
        } {
            if(a[j] < votes*((double)1/(4*m))){
                System.out.println("No");
                return;
            }
        } if(a[j] < votes*((double)1/(4*m))){
                System.out.println("No");
                return;
            } a[j] < votes*((double)1/(4*m)) a[j] a j votes*((double)1/(4*m)) votes ((double)1/(4*m)) (double)1 (4*m) 4 m {
                System.out.println("No");
                return;
            } System.out.println("No") System.out.println System.out System System.out "No" return; System.out.println("Yes") System.out.println System.out System System.out "Yes" String[] args args public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int m = sc.nextInt();
        Integer[] a = new Integer[n];
        int votes = 0;
        
        for(int i=0; i<n; i++){
            a[i] = sc.nextInt();
            votes += a[i];
        }
        
        Arrays.sort(a, Collections.reverseOrder());
        
        for(int j=0; j<m; j++){
            if(a[j] < votes*((double)1/(4*m))){
                System.out.println("No");
                return;
            }
        }
        System.out.println("Yes");
    }
} public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int m = sc.nextInt();
        Integer[] a = new Integer[n];
        int votes = 0;
        
        for(int i=0; i<n; i++){
            a[i] = sc.nextInt();
            votes += a[i];
        }
        
        Arrays.sort(a, Collections.reverseOrder());
        
        for(int j=0; j<m; j++){
            if(a[j] < votes*((double)1/(4*m))){
                System.out.println("No");
                return;
            }
        }
        System.out.println("Yes");
    }
} Main
import java.util.*;

public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int m = sc.nextInt();
        Integer[] a = new Integer[n];
        int votes = 0;
        
        for(int i=0; i<n; i++){
            a[i] = sc.nextInt();
            votes += a[i];
        }
        
        Arrays.sort(a, Collections.reverseOrder());
        
        for(int j=0; j<m; j++){
            if(a[j] < votes*((double)1/(4*m))){
                System.out.println("No");
                return;
            }
        }
        System.out.println("Yes");
    }
}