import 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 sum = 0;
      
      for (int i = 0; i < n; i++) {
         int aa = sc.nextInt();
         a[i] = aa;
         sum += aa;
      }
      
      double x = sum * 100 / (4*m);
      
      int t = 0;
      
      for (int j = 0; j < n; j++) {
         int aaa = a[j];
         if (aaa*100 == x || aaa*100 > x) {
            t++;
         }
      }
      
      if (t == m || t > m) {
         System.out.println("Yes");
      } else {
         System.out.println("No");  
      }
   }        
} import java.util.*; util.* java 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 sum = 0;
      
      for (int i = 0; i < n; i++) {
         int aa = sc.nextInt();
         a[i] = aa;
         sum += aa;
      }
      
      double x = sum * 100 / (4*m);
      
      int t = 0;
      
      for (int j = 0; j < n; j++) {
         int aaa = a[j];
         if (aaa*100 == x || aaa*100 > x) {
            t++;
         }
      }
      
      if (t == m || t > 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 sum = 0;
      
      for (int i = 0; i < n; i++) {
         int aa = sc.nextInt();
         a[i] = aa;
         sum += aa;
      }
      
      double x = sum * 100 / (4*m);
      
      int t = 0;
      
      for (int j = 0; j < n; j++) {
         int aaa = a[j];
         if (aaa*100 == x || aaa*100 > x) {
            t++;
         }
      }
      
      if (t == m || t > 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 sum = 0;
      
      for (int i = 0; i < n; i++) {
         int aa = sc.nextInt();
         a[i] = aa;
         sum += aa;
      }
      
      double x = sum * 100 / (4*m);
      
      int t = 0;
      
      for (int j = 0; j < n; j++) {
         int aaa = a[j];
         if (aaa*100 == x || aaa*100 > x) {
            t++;
         }
      }
      
      if (t == m || t > 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 sum = 0; sum 0 for (int i = 0; i < n; i++) {
         int aa = sc.nextInt();
         a[i] = aa;
         sum += aa;
      } int i = 0; int i = 0; i 0 i < n i n i++ i++ i {
         int aa = sc.nextInt();
         a[i] = aa;
         sum += aa;
      } {
         int aa = sc.nextInt();
         a[i] = aa;
         sum += aa;
      } int aa = sc.nextInt(); aa sc.nextInt() sc.nextInt sc a[i] = aa a[i] a i aa sum += aa sum aa double x = sum * 100 / (4*m); x sum * 100 / (4*m) sum * 100 sum 100 (4*m) 4 m int t = 0; t 0 for (int j = 0; j < n; j++) {
         int aaa = a[j];
         if (aaa*100 == x || aaa*100 > x) {
            t++;
         }
      } int j = 0; int j = 0; j 0 j < n j n j++ j++ j {
         int aaa = a[j];
         if (aaa*100 == x || aaa*100 > x) {
            t++;
         }
      } {
         int aaa = a[j];
         if (aaa*100 == x || aaa*100 > x) {
            t++;
         }
      } int aaa = a[j]; aaa a[j] a j if (aaa*100 == x || aaa*100 > x) {
            t++;
         } aaa*100 == x || aaa*100 > x aaa*100 == x aaa*100 aaa 100 x aaa*100 > x aaa*100 aaa 100 x {
            t++;
         } t++ t if (t == m || t > m) {
         System.out.println("Yes");
      } else {
         System.out.println("No");  
      } t == m || t > m t == m t m t > m t 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 sum = 0;
      
      for (int i = 0; i < n; i++) {
         int aa = sc.nextInt();
         a[i] = aa;
         sum += aa;
      }
      
      double x = sum * 100 / (4*m);
      
      int t = 0;
      
      for (int j = 0; j < n; j++) {
         int aaa = a[j];
         if (aaa*100 == x || aaa*100 > x) {
            t++;
         }
      }
      
      if (t == m || t > 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 sum = 0;
      
      for (int i = 0; i < n; i++) {
         int aa = sc.nextInt();
         a[i] = aa;
         sum += aa;
      }
      
      double x = sum * 100 / (4*m);
      
      int t = 0;
      
      for (int j = 0; j < n; j++) {
         int aaa = a[j];
         if (aaa*100 == x || aaa*100 > x) {
            t++;
         }
      }
      
      if (t == m || t > m) {
         System.out.println("Yes");
      } else {
         System.out.println("No");  
      }
   }        
} Main
import 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 sum = 0;
      
      for (int i = 0; i < n; i++) {
         int aa = sc.nextInt();
         a[i] = aa;
         sum += aa;
      }
      
      double x = sum * 100 / (4*m);
      
      int t = 0;
      
      for (int j = 0; j < n; j++) {
         int aaa = a[j];
         if (aaa*100 == x || aaa*100 > x) {
            t++;
         }
      }
      
      if (t == m || t > m) {
         System.out.println("Yes");
      } else {
         System.out.println("No");  
      }
   }        
}