import java.util.*;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        int numOfItems = sc.nextInt();
        int numOfPopItemsLowerLimit = sc.nextInt();
        int cnt = 0;
        int sumOfVotes = 0;

        int[] numOfVotes = new int[numOfItems];

        for (int i = 0; i < numOfItems; i++) {
            numOfVotes[i] = sc.nextInt();
            sumOfVotes += numOfVotes[i];
        }

        for (int i = 0; i < numOfItems; i++) {
            if ((double) numOfVotes[i] >= (double) sumOfVotes / 4 / numOfPopItemsLowerLimit) {
                cnt++;
            }
        }

        if (cnt >= numOfPopItemsLowerLimit) {
            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 numOfItems = sc.nextInt();
        int numOfPopItemsLowerLimit = sc.nextInt();
        int cnt = 0;
        int sumOfVotes = 0;

        int[] numOfVotes = new int[numOfItems];

        for (int i = 0; i < numOfItems; i++) {
            numOfVotes[i] = sc.nextInt();
            sumOfVotes += numOfVotes[i];
        }

        for (int i = 0; i < numOfItems; i++) {
            if ((double) numOfVotes[i] >= (double) sumOfVotes / 4 / numOfPopItemsLowerLimit) {
                cnt++;
            }
        }

        if (cnt >= numOfPopItemsLowerLimit) {
            System.out.println("Yes");
        } else {
            System.out.println("No");
        }
    }
} Main public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        int numOfItems = sc.nextInt();
        int numOfPopItemsLowerLimit = sc.nextInt();
        int cnt = 0;
        int sumOfVotes = 0;

        int[] numOfVotes = new int[numOfItems];

        for (int i = 0; i < numOfItems; i++) {
            numOfVotes[i] = sc.nextInt();
            sumOfVotes += numOfVotes[i];
        }

        for (int i = 0; i < numOfItems; i++) {
            if ((double) numOfVotes[i] >= (double) sumOfVotes / 4 / numOfPopItemsLowerLimit) {
                cnt++;
            }
        }

        if (cnt >= numOfPopItemsLowerLimit) {
            System.out.println("Yes");
        } else {
            System.out.println("No");
        }
    } main {
        Scanner sc = new Scanner(System.in);

        int numOfItems = sc.nextInt();
        int numOfPopItemsLowerLimit = sc.nextInt();
        int cnt = 0;
        int sumOfVotes = 0;

        int[] numOfVotes = new int[numOfItems];

        for (int i = 0; i < numOfItems; i++) {
            numOfVotes[i] = sc.nextInt();
            sumOfVotes += numOfVotes[i];
        }

        for (int i = 0; i < numOfItems; i++) {
            if ((double) numOfVotes[i] >= (double) sumOfVotes / 4 / numOfPopItemsLowerLimit) {
                cnt++;
            }
        }

        if (cnt >= numOfPopItemsLowerLimit) {
            System.out.println("Yes");
        } else {
            System.out.println("No");
        }
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int numOfItems = sc.nextInt(); numOfItems sc.nextInt() sc.nextInt sc int numOfPopItemsLowerLimit = sc.nextInt(); numOfPopItemsLowerLimit sc.nextInt() sc.nextInt sc int cnt = 0; cnt 0 int sumOfVotes = 0; sumOfVotes 0 int[] numOfVotes = new int[numOfItems]; numOfVotes new int[numOfItems] numOfItems for (int i = 0; i < numOfItems; i++) {
            numOfVotes[i] = sc.nextInt();
            sumOfVotes += numOfVotes[i];
        } int i = 0; int i = 0; i 0 i < numOfItems i numOfItems i++ i++ i {
            numOfVotes[i] = sc.nextInt();
            sumOfVotes += numOfVotes[i];
        } {
            numOfVotes[i] = sc.nextInt();
            sumOfVotes += numOfVotes[i];
        } numOfVotes[i] = sc.nextInt() numOfVotes[i] numOfVotes i sc.nextInt() sc.nextInt sc sumOfVotes += numOfVotes[i] sumOfVotes numOfVotes[i] numOfVotes i for (int i = 0; i < numOfItems; i++) {
            if ((double) numOfVotes[i] >= (double) sumOfVotes / 4 / numOfPopItemsLowerLimit) {
                cnt++;
            }
        } int i = 0; int i = 0; i 0 i < numOfItems i numOfItems i++ i++ i {
            if ((double) numOfVotes[i] >= (double) sumOfVotes / 4 / numOfPopItemsLowerLimit) {
                cnt++;
            }
        } {
            if ((double) numOfVotes[i] >= (double) sumOfVotes / 4 / numOfPopItemsLowerLimit) {
                cnt++;
            }
        } if ((double) numOfVotes[i] >= (double) sumOfVotes / 4 / numOfPopItemsLowerLimit) {
                cnt++;
            } (double) numOfVotes[i] >= (double) sumOfVotes / 4 / numOfPopItemsLowerLimit (double) numOfVotes[i] numOfVotes i (double) sumOfVotes / 4 / numOfPopItemsLowerLimit (double) sumOfVotes / 4 / numOfPopItemsLowerLimit (double) sumOfVotes 4 numOfPopItemsLowerLimit {
                cnt++;
            } cnt++ cnt if (cnt >= numOfPopItemsLowerLimit) {
            System.out.println("Yes");
        } else {
            System.out.println("No");
        } cnt >= numOfPopItemsLowerLimit cnt numOfPopItemsLowerLimit {
            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 numOfItems = sc.nextInt();
        int numOfPopItemsLowerLimit = sc.nextInt();
        int cnt = 0;
        int sumOfVotes = 0;

        int[] numOfVotes = new int[numOfItems];

        for (int i = 0; i < numOfItems; i++) {
            numOfVotes[i] = sc.nextInt();
            sumOfVotes += numOfVotes[i];
        }

        for (int i = 0; i < numOfItems; i++) {
            if ((double) numOfVotes[i] >= (double) sumOfVotes / 4 / numOfPopItemsLowerLimit) {
                cnt++;
            }
        }

        if (cnt >= numOfPopItemsLowerLimit) {
            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 numOfItems = sc.nextInt();
        int numOfPopItemsLowerLimit = sc.nextInt();
        int cnt = 0;
        int sumOfVotes = 0;

        int[] numOfVotes = new int[numOfItems];

        for (int i = 0; i < numOfItems; i++) {
            numOfVotes[i] = sc.nextInt();
            sumOfVotes += numOfVotes[i];
        }

        for (int i = 0; i < numOfItems; i++) {
            if ((double) numOfVotes[i] >= (double) sumOfVotes / 4 / numOfPopItemsLowerLimit) {
                cnt++;
            }
        }

        if (cnt >= numOfPopItemsLowerLimit) {
            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 numOfItems = sc.nextInt();
        int numOfPopItemsLowerLimit = sc.nextInt();
        int cnt = 0;
        int sumOfVotes = 0;

        int[] numOfVotes = new int[numOfItems];

        for (int i = 0; i < numOfItems; i++) {
            numOfVotes[i] = sc.nextInt();
            sumOfVotes += numOfVotes[i];
        }

        for (int i = 0; i < numOfItems; i++) {
            if ((double) numOfVotes[i] >= (double) sumOfVotes / 4 / numOfPopItemsLowerLimit) {
                cnt++;
            }
        }

        if (cnt >= numOfPopItemsLowerLimit) {
            System.out.println("Yes");
        } else {
            System.out.println("No");
        }
    }
}
