import java.util.*;
import java.math.*;

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];

    long sum = 0;

    for (int i = 0; i < n; i++) {
      a[i] = sc.nextInt();
      sum += a[i];
    }

    int count = 0;
    double k = (double)1/(4*m);

    for (int i = 0; i < n; i++) {
      if (a[i] >= k*sum) {
        count++;
      }
      if (count == m) {
        System.out.println("Yes");
        return;
      }
    }

    System.out.println("No");



  }

} import java.util.*; util.* java import java.math.*; math.* 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];

    long sum = 0;

    for (int i = 0; i < n; i++) {
      a[i] = sc.nextInt();
      sum += a[i];
    }

    int count = 0;
    double k = (double)1/(4*m);

    for (int i = 0; i < n; i++) {
      if (a[i] >= k*sum) {
        count++;
      }
      if (count == m) {
        System.out.println("Yes");
        return;
      }
    }

    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];

    long sum = 0;

    for (int i = 0; i < n; i++) {
      a[i] = sc.nextInt();
      sum += a[i];
    }

    int count = 0;
    double k = (double)1/(4*m);

    for (int i = 0; i < n; i++) {
      if (a[i] >= k*sum) {
        count++;
      }
      if (count == m) {
        System.out.println("Yes");
        return;
      }
    }

    System.out.println("No");



  } main {
    Scanner sc = new Scanner(System.in);
    int n = sc.nextInt();
    int m = sc.nextInt();

    int[] a = new int[n];

    long sum = 0;

    for (int i = 0; i < n; i++) {
      a[i] = sc.nextInt();
      sum += a[i];
    }

    int count = 0;
    double k = (double)1/(4*m);

    for (int i = 0; i < n; i++) {
      if (a[i] >= k*sum) {
        count++;
      }
      if (count == m) {
        System.out.println("Yes");
        return;
      }
    }

    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 long sum = 0; sum 0 for (int i = 0; i < n; i++) {
      a[i] = sc.nextInt();
      sum += a[i];
    } int i = 0; int i = 0; i 0 i < n i n i++ i++ i {
      a[i] = sc.nextInt();
      sum += a[i];
    } {
      a[i] = sc.nextInt();
      sum += a[i];
    } a[i] = sc.nextInt() a[i] a i sc.nextInt() sc.nextInt sc sum += a[i] sum a[i] a i int count = 0; count 0 double k = (double)1/(4*m); k (double)1/(4*m) (double)1 (4*m) 4 m for (int i = 0; i < n; i++) {
      if (a[i] >= k*sum) {
        count++;
      }
      if (count == m) {
        System.out.println("Yes");
        return;
      }
    } int i = 0; int i = 0; i 0 i < n i n i++ i++ i {
      if (a[i] >= k*sum) {
        count++;
      }
      if (count == m) {
        System.out.println("Yes");
        return;
      }
    } {
      if (a[i] >= k*sum) {
        count++;
      }
      if (count == m) {
        System.out.println("Yes");
        return;
      }
    } if (a[i] >= k*sum) {
        count++;
      } a[i] >= k*sum a[i] a i k*sum k sum {
        count++;
      } count++ count if (count == m) {
        System.out.println("Yes");
        return;
      } count == m count m {
        System.out.println("Yes");
        return;
      } System.out.println("Yes") System.out.println System.out System System.out "Yes" return; 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];

    long sum = 0;

    for (int i = 0; i < n; i++) {
      a[i] = sc.nextInt();
      sum += a[i];
    }

    int count = 0;
    double k = (double)1/(4*m);

    for (int i = 0; i < n; i++) {
      if (a[i] >= k*sum) {
        count++;
      }
      if (count == m) {
        System.out.println("Yes");
        return;
      }
    }

    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];

    long sum = 0;

    for (int i = 0; i < n; i++) {
      a[i] = sc.nextInt();
      sum += a[i];
    }

    int count = 0;
    double k = (double)1/(4*m);

    for (int i = 0; i < n; i++) {
      if (a[i] >= k*sum) {
        count++;
      }
      if (count == m) {
        System.out.println("Yes");
        return;
      }
    }

    System.out.println("No");



  }

} Main
import java.util.*;
import java.math.*;

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];

    long sum = 0;

    for (int i = 0; i < n; i++) {
      a[i] = sc.nextInt();
      sum += a[i];
    }

    int count = 0;
    double k = (double)1/(4*m);

    for (int i = 0; i < n; i++) {
      if (a[i] >= k*sum) {
        count++;
      }
      if (count == m) {
        System.out.println("Yes");
        return;
      }
    }

    System.out.println("No");



  }

}
