import java.util.*;

public class Main {
    public static void main(String[] args) throws Exception {
        String[] lines = getStdin();
        String line = lines[0];
        String[] a = line.split(" ");
        int N = Integer.parseInt(a[0]);
        int M = Integer.parseInt(a[1]);

        String line1 = lines[1];
        String[] b = line1.split(" ");
        //int cost = Integer.parseInt(b[i]);
        

        int total = 0;
        int[] numvote = new int[b.length];
        for (int i = 0; i < b.length; i++){
            int vote = Integer.parseInt(b[i]);
            numvote[i] = vote;
            total += vote;
        }
    
        int count = 0;
        for (int j = 0; j < b.length; j++){
            int rank = numvote[j];
            if(rank >= total * (1.0/(4.0 * (double)M))){
                count++;
            }
        }
        if (count >= M){
            System.out.println("Yes");
        } else {
            System.out.println("No");
        }

        
    }
  
  private static String[] getStdin() {
    Scanner scanner = new Scanner(System.in);
    ArrayList<String> lines = new ArrayList<>();
    while (scanner.hasNext()) {
      lines.add(scanner.nextLine());
    }
    return lines.toArray(new String[lines.size()]);
  }
  
} import java.util.*; util.* java public class Main {
    public static void main(String[] args) throws Exception {
        String[] lines = getStdin();
        String line = lines[0];
        String[] a = line.split(" ");
        int N = Integer.parseInt(a[0]);
        int M = Integer.parseInt(a[1]);

        String line1 = lines[1];
        String[] b = line1.split(" ");
        //int cost = Integer.parseInt(b[i]);
        

        int total = 0;
        int[] numvote = new int[b.length];
        for (int i = 0; i < b.length; i++){
            int vote = Integer.parseInt(b[i]);
            numvote[i] = vote;
            total += vote;
        }
    
        int count = 0;
        for (int j = 0; j < b.length; j++){
            int rank = numvote[j];
            if(rank >= total * (1.0/(4.0 * (double)M))){
                count++;
            }
        }
        if (count >= M){
            System.out.println("Yes");
        } else {
            System.out.println("No");
        }

        
    }
  
  private static String[] getStdin() {
    Scanner scanner = new Scanner(System.in);
    ArrayList<String> lines = new ArrayList<>();
    while (scanner.hasNext()) {
      lines.add(scanner.nextLine());
    }
    return lines.toArray(new String[lines.size()]);
  }
  
} Main public static void main(String[] args) throws Exception {
        String[] lines = getStdin();
        String line = lines[0];
        String[] a = line.split(" ");
        int N = Integer.parseInt(a[0]);
        int M = Integer.parseInt(a[1]);

        String line1 = lines[1];
        String[] b = line1.split(" ");
        //int cost = Integer.parseInt(b[i]);
        

        int total = 0;
        int[] numvote = new int[b.length];
        for (int i = 0; i < b.length; i++){
            int vote = Integer.parseInt(b[i]);
            numvote[i] = vote;
            total += vote;
        }
    
        int count = 0;
        for (int j = 0; j < b.length; j++){
            int rank = numvote[j];
            if(rank >= total * (1.0/(4.0 * (double)M))){
                count++;
            }
        }
        if (count >= M){
            System.out.println("Yes");
        } else {
            System.out.println("No");
        }

        
    } main {
        String[] lines = getStdin();
        String line = lines[0];
        String[] a = line.split(" ");
        int N = Integer.parseInt(a[0]);
        int M = Integer.parseInt(a[1]);

        String line1 = lines[1];
        String[] b = line1.split(" ");
        //int cost = Integer.parseInt(b[i]);
        

        int total = 0;
        int[] numvote = new int[b.length];
        for (int i = 0; i < b.length; i++){
            int vote = Integer.parseInt(b[i]);
            numvote[i] = vote;
            total += vote;
        }
    
        int count = 0;
        for (int j = 0; j < b.length; j++){
            int rank = numvote[j];
            if(rank >= total * (1.0/(4.0 * (double)M))){
                count++;
            }
        }
        if (count >= M){
            System.out.println("Yes");
        } else {
            System.out.println("No");
        }

        
    } String[] lines = getStdin(); lines getStdin() getStdin String line = lines[0]; line lines[0] lines 0 String[] a = line.split(" "); a line.split(" ") line.split line " " int N = Integer.parseInt(a[0]); N Integer.parseInt(a[0]) Integer.parseInt Integer a[0] a 0 int M = Integer.parseInt(a[1]); M Integer.parseInt(a[1]) Integer.parseInt Integer a[1] a 1 String line1 = lines[1]; line1 lines[1] lines 1 String[] b = line1.split(" "); b line1.split(" ") line1.split line1 " " int total = 0; total 0 int[] numvote = new int[b.length]; numvote new int[b.length] b.length b b.length for (int i = 0; i < b.length; i++){
            int vote = Integer.parseInt(b[i]);
            numvote[i] = vote;
            total += vote;
        } int i = 0; int i = 0; i 0 i < b.length i b.length b b.length i++ i++ i {
            int vote = Integer.parseInt(b[i]);
            numvote[i] = vote;
            total += vote;
        } {
            int vote = Integer.parseInt(b[i]);
            numvote[i] = vote;
            total += vote;
        } int vote = Integer.parseInt(b[i]); vote Integer.parseInt(b[i]) Integer.parseInt Integer b[i] b i numvote[i] = vote numvote[i] numvote i vote total += vote total vote int count = 0; count 0 for (int j = 0; j < b.length; j++){
            int rank = numvote[j];
            if(rank >= total * (1.0/(4.0 * (double)M))){
                count++;
            }
        } int j = 0; int j = 0; j 0 j < b.length j b.length b b.length j++ j++ j {
            int rank = numvote[j];
            if(rank >= total * (1.0/(4.0 * (double)M))){
                count++;
            }
        } {
            int rank = numvote[j];
            if(rank >= total * (1.0/(4.0 * (double)M))){
                count++;
            }
        } int rank = numvote[j]; rank numvote[j] numvote j if(rank >= total * (1.0/(4.0 * (double)M))){
                count++;
            } rank >= total * (1.0/(4.0 * (double)M)) rank total * (1.0/(4.0 * (double)M)) total (1.0/(4.0 * (double)M)) 1.0 (4.0 * (double)M) 4.0 (double)M {
                count++;
            } count++ count if (count >= M){
            System.out.println("Yes");
        } else {
            System.out.println("No");
        } count >= M count 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 private static String[] getStdin() {
    Scanner scanner = new Scanner(System.in);
    ArrayList<String> lines = new ArrayList<>();
    while (scanner.hasNext()) {
      lines.add(scanner.nextLine());
    }
    return lines.toArray(new String[lines.size()]);
  } getStdin {
    Scanner scanner = new Scanner(System.in);
    ArrayList<String> lines = new ArrayList<>();
    while (scanner.hasNext()) {
      lines.add(scanner.nextLine());
    }
    return lines.toArray(new String[lines.size()]);
  } Scanner scanner = new Scanner(System.in); scanner new Scanner(System.in) ArrayList<String> lines = new ArrayList<>(); lines new ArrayList<>() while (scanner.hasNext()) {
      lines.add(scanner.nextLine());
    } scanner.hasNext() scanner.hasNext scanner {
      lines.add(scanner.nextLine());
    } lines.add(scanner.nextLine()) lines.add lines scanner.nextLine() scanner.nextLine scanner return lines.toArray(new String[lines.size()]); lines.toArray(new String[lines.size()]) lines.toArray lines new String[lines.size()] lines.size() lines.size lines public class Main {
    public static void main(String[] args) throws Exception {
        String[] lines = getStdin();
        String line = lines[0];
        String[] a = line.split(" ");
        int N = Integer.parseInt(a[0]);
        int M = Integer.parseInt(a[1]);

        String line1 = lines[1];
        String[] b = line1.split(" ");
        //int cost = Integer.parseInt(b[i]);
        

        int total = 0;
        int[] numvote = new int[b.length];
        for (int i = 0; i < b.length; i++){
            int vote = Integer.parseInt(b[i]);
            numvote[i] = vote;
            total += vote;
        }
    
        int count = 0;
        for (int j = 0; j < b.length; j++){
            int rank = numvote[j];
            if(rank >= total * (1.0/(4.0 * (double)M))){
                count++;
            }
        }
        if (count >= M){
            System.out.println("Yes");
        } else {
            System.out.println("No");
        }

        
    }
  
  private static String[] getStdin() {
    Scanner scanner = new Scanner(System.in);
    ArrayList<String> lines = new ArrayList<>();
    while (scanner.hasNext()) {
      lines.add(scanner.nextLine());
    }
    return lines.toArray(new String[lines.size()]);
  }
  
} public class Main {
    public static void main(String[] args) throws Exception {
        String[] lines = getStdin();
        String line = lines[0];
        String[] a = line.split(" ");
        int N = Integer.parseInt(a[0]);
        int M = Integer.parseInt(a[1]);

        String line1 = lines[1];
        String[] b = line1.split(" ");
        //int cost = Integer.parseInt(b[i]);
        

        int total = 0;
        int[] numvote = new int[b.length];
        for (int i = 0; i < b.length; i++){
            int vote = Integer.parseInt(b[i]);
            numvote[i] = vote;
            total += vote;
        }
    
        int count = 0;
        for (int j = 0; j < b.length; j++){
            int rank = numvote[j];
            if(rank >= total * (1.0/(4.0 * (double)M))){
                count++;
            }
        }
        if (count >= M){
            System.out.println("Yes");
        } else {
            System.out.println("No");
        }

        
    }
  
  private static String[] getStdin() {
    Scanner scanner = new Scanner(System.in);
    ArrayList<String> lines = new ArrayList<>();
    while (scanner.hasNext()) {
      lines.add(scanner.nextLine());
    }
    return lines.toArray(new String[lines.size()]);
  }
  
} Main
import java.util.*;

public class Main {
    public static void main(String[] args) throws Exception {
        String[] lines = getStdin();
        String line = lines[0];
        String[] a = line.split(" ");
        int N = Integer.parseInt(a[0]);
        int M = Integer.parseInt(a[1]);

        String line1 = lines[1];
        String[] b = line1.split(" ");
        //int cost = Integer.parseInt(b[i]);
        

        int total = 0;
        int[] numvote = new int[b.length];
        for (int i = 0; i < b.length; i++){
            int vote = Integer.parseInt(b[i]);
            numvote[i] = vote;
            total += vote;
        }
    
        int count = 0;
        for (int j = 0; j < b.length; j++){
            int rank = numvote[j];
            if(rank >= total * (1.0/(4.0 * (double)M))){
                count++;
            }
        }
        if (count >= M){
            System.out.println("Yes");
        } else {
            System.out.println("No");
        }

        
    }
  
  private static String[] getStdin() {
    Scanner scanner = new Scanner(System.in);
    ArrayList<String> lines = new ArrayList<>();
    while (scanner.hasNext()) {
      lines.add(scanner.nextLine());
    }
    return lines.toArray(new String[lines.size()]);
  }
  
}
