import java.util.*;

public class Main {
    public static void main(String[] args) throws Exception {
        
        Scanner scanner = new Scanner(System.in);
        int N = scanner.nextInt();
        int M = scanner.nextInt();
        int[] A = new int[N];
        int count1 = 0;  //総投票数
        int count2 = 0;  //総投票数の1/4M以上の票を集めた商品数
        
        for(int i=0; i<N; i++){
            A[i] = scanner.nextInt();
            count1 += A[i]; 
        }
        
        for(int i=0; i<N; i++){
            if((double)((double)count1/(4*(double)M))<=A[i]){
                count2 += 1;
            }
        }
        
        if(count2>=M){
            System.out.println("Yes");
        }else{
            System.out.println("No");
        }

    }
} import java.util.*; util.* java public class Main {
    public static void main(String[] args) throws Exception {
        
        Scanner scanner = new Scanner(System.in);
        int N = scanner.nextInt();
        int M = scanner.nextInt();
        int[] A = new int[N];
        int count1 = 0;  //総投票数
        int count2 = 0;  //総投票数の1/4M以上の票を集めた商品数
        
        for(int i=0; i<N; i++){
            A[i] = scanner.nextInt();
            count1 += A[i]; 
        }
        
        for(int i=0; i<N; i++){
            if((double)((double)count1/(4*(double)M))<=A[i]){
                count2 += 1;
            }
        }
        
        if(count2>=M){
            System.out.println("Yes");
        }else{
            System.out.println("No");
        }

    }
} Main public static void main(String[] args) throws Exception {
        
        Scanner scanner = new Scanner(System.in);
        int N = scanner.nextInt();
        int M = scanner.nextInt();
        int[] A = new int[N];
        int count1 = 0;  //総投票数
        int count2 = 0;  //総投票数の1/4M以上の票を集めた商品数
        
        for(int i=0; i<N; i++){
            A[i] = scanner.nextInt();
            count1 += A[i]; 
        }
        
        for(int i=0; i<N; i++){
            if((double)((double)count1/(4*(double)M))<=A[i]){
                count2 += 1;
            }
        }
        
        if(count2>=M){
            System.out.println("Yes");
        }else{
            System.out.println("No");
        }

    } main {
        
        Scanner scanner = new Scanner(System.in);
        int N = scanner.nextInt();
        int M = scanner.nextInt();
        int[] A = new int[N];
        int count1 = 0;  //総投票数
        int count2 = 0;  //総投票数の1/4M以上の票を集めた商品数
        
        for(int i=0; i<N; i++){
            A[i] = scanner.nextInt();
            count1 += A[i]; 
        }
        
        for(int i=0; i<N; i++){
            if((double)((double)count1/(4*(double)M))<=A[i]){
                count2 += 1;
            }
        }
        
        if(count2>=M){
            System.out.println("Yes");
        }else{
            System.out.println("No");
        }

    } Scanner scanner = new Scanner(System.in); scanner new Scanner(System.in) int N = scanner.nextInt(); N scanner.nextInt() scanner.nextInt scanner int M = scanner.nextInt(); M scanner.nextInt() scanner.nextInt scanner int[] A = new int[N]; A new int[N] N int count1 = 0; count1 0 int count2 = 0; count2 0 for(int i=0; i<N; i++){
            A[i] = scanner.nextInt();
            count1 += A[i]; 
        } int i=0; int i=0; i 0 i<N i N i++ i++ i {
            A[i] = scanner.nextInt();
            count1 += A[i]; 
        } {
            A[i] = scanner.nextInt();
            count1 += A[i]; 
        } A[i] = scanner.nextInt() A[i] A i scanner.nextInt() scanner.nextInt scanner count1 += A[i] count1 A[i] A i for(int i=0; i<N; i++){
            if((double)((double)count1/(4*(double)M))<=A[i]){
                count2 += 1;
            }
        } int i=0; int i=0; i 0 i<N i N i++ i++ i {
            if((double)((double)count1/(4*(double)M))<=A[i]){
                count2 += 1;
            }
        } {
            if((double)((double)count1/(4*(double)M))<=A[i]){
                count2 += 1;
            }
        } if((double)((double)count1/(4*(double)M))<=A[i]){
                count2 += 1;
            } (double)((double)count1/(4*(double)M))<=A[i] (double)((double)count1/(4*(double)M)) (double)count1 (4*(double)M) 4 (double)M A[i] A i {
                count2 += 1;
            } count2 += 1 count2 1 if(count2>=M){
            System.out.println("Yes");
        }else{
            System.out.println("No");
        } count2>=M count2 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) throws Exception {
        
        Scanner scanner = new Scanner(System.in);
        int N = scanner.nextInt();
        int M = scanner.nextInt();
        int[] A = new int[N];
        int count1 = 0;  //総投票数
        int count2 = 0;  //総投票数の1/4M以上の票を集めた商品数
        
        for(int i=0; i<N; i++){
            A[i] = scanner.nextInt();
            count1 += A[i]; 
        }
        
        for(int i=0; i<N; i++){
            if((double)((double)count1/(4*(double)M))<=A[i]){
                count2 += 1;
            }
        }
        
        if(count2>=M){
            System.out.println("Yes");
        }else{
            System.out.println("No");
        }

    }
} public class Main {
    public static void main(String[] args) throws Exception {
        
        Scanner scanner = new Scanner(System.in);
        int N = scanner.nextInt();
        int M = scanner.nextInt();
        int[] A = new int[N];
        int count1 = 0;  //総投票数
        int count2 = 0;  //総投票数の1/4M以上の票を集めた商品数
        
        for(int i=0; i<N; i++){
            A[i] = scanner.nextInt();
            count1 += A[i]; 
        }
        
        for(int i=0; i<N; i++){
            if((double)((double)count1/(4*(double)M))<=A[i]){
                count2 += 1;
            }
        }
        
        if(count2>=M){
            System.out.println("Yes");
        }else{
            System.out.println("No");
        }

    }
} Main
import java.util.*;

public class Main {
    public static void main(String[] args) throws Exception {
        
        Scanner scanner = new Scanner(System.in);
        int N = scanner.nextInt();
        int M = scanner.nextInt();
        int[] A = new int[N];
        int count1 = 0;  //総投票数
        int count2 = 0;  //総投票数の1/4M以上の票を集めた商品数
        
        for(int i=0; i<N; i++){
            A[i] = scanner.nextInt();
            count1 += A[i]; 
        }
        
        for(int i=0; i<N; i++){
            if((double)((double)count1/(4*(double)M))<=A[i]){
                count2 += 1;
            }
        }
        
        if(count2>=M){
            System.out.println("Yes");
        }else{
            System.out.println("No");
        }

    }
}
