
import java.util.Scanner;

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

        int N = scanner.nextInt();
        int M = scanner.nextInt();
        int[] A = new int[N];
        int total = 0;

        for (int i = 0 ; i < N ; i++) {
            A[i] = scanner.nextInt();
            total += A[i];
        }

        int count = 0;
        for (int i = 0 ; i < N ; i++) {
            if (A[i] * 4 * M >= total) count++;
            if (count >= M) {
                System.out.println("Yes");
                return;
            }
        }

        System.out.println("No");
    }
} import java.util.Scanner; Scanner java.util public class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        int N = scanner.nextInt();
        int M = scanner.nextInt();
        int[] A = new int[N];
        int total = 0;

        for (int i = 0 ; i < N ; i++) {
            A[i] = scanner.nextInt();
            total += A[i];
        }

        int count = 0;
        for (int i = 0 ; i < N ; i++) {
            if (A[i] * 4 * M >= total) count++;
            if (count >= M) {
                System.out.println("Yes");
                return;
            }
        }

        System.out.println("No");
    }
} Main public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        int N = scanner.nextInt();
        int M = scanner.nextInt();
        int[] A = new int[N];
        int total = 0;

        for (int i = 0 ; i < N ; i++) {
            A[i] = scanner.nextInt();
            total += A[i];
        }

        int count = 0;
        for (int i = 0 ; i < N ; i++) {
            if (A[i] * 4 * M >= total) count++;
            if (count >= M) {
                System.out.println("Yes");
                return;
            }
        }

        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 total = 0;

        for (int i = 0 ; i < N ; i++) {
            A[i] = scanner.nextInt();
            total += A[i];
        }

        int count = 0;
        for (int i = 0 ; i < N ; i++) {
            if (A[i] * 4 * M >= total) count++;
            if (count >= M) {
                System.out.println("Yes");
                return;
            }
        }

        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 total = 0; total 0 for (int i = 0 ; i < N ; i++) {
            A[i] = scanner.nextInt();
            total += A[i];
        } int i = 0 ; int i = 0 ; i 0 i < N i N i++ i++ i {
            A[i] = scanner.nextInt();
            total += A[i];
        } {
            A[i] = scanner.nextInt();
            total += A[i];
        } A[i] = scanner.nextInt() A[i] A i scanner.nextInt() scanner.nextInt scanner total += A[i] total A[i] A i int count = 0; count 0 for (int i = 0 ; i < N ; i++) {
            if (A[i] * 4 * M >= total) 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] * 4 * M >= total) count++;
            if (count >= M) {
                System.out.println("Yes");
                return;
            }
        } {
            if (A[i] * 4 * M >= total) count++;
            if (count >= M) {
                System.out.println("Yes");
                return;
            }
        } if (A[i] * 4 * M >= total) count++; A[i] * 4 * M >= total A[i] * 4 * M A[i] * 4 * M A[i] A i 4 M total 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 scanner = new Scanner(System.in);

        int N = scanner.nextInt();
        int M = scanner.nextInt();
        int[] A = new int[N];
        int total = 0;

        for (int i = 0 ; i < N ; i++) {
            A[i] = scanner.nextInt();
            total += A[i];
        }

        int count = 0;
        for (int i = 0 ; i < N ; i++) {
            if (A[i] * 4 * M >= total) count++;
            if (count >= M) {
                System.out.println("Yes");
                return;
            }
        }

        System.out.println("No");
    }
} public class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        int N = scanner.nextInt();
        int M = scanner.nextInt();
        int[] A = new int[N];
        int total = 0;

        for (int i = 0 ; i < N ; i++) {
            A[i] = scanner.nextInt();
            total += A[i];
        }

        int count = 0;
        for (int i = 0 ; i < N ; i++) {
            if (A[i] * 4 * M >= total) count++;
            if (count >= M) {
                System.out.println("Yes");
                return;
            }
        }

        System.out.println("No");
    }
} Main

import java.util.Scanner;

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

        int N = scanner.nextInt();
        int M = scanner.nextInt();
        int[] A = new int[N];
        int total = 0;

        for (int i = 0 ; i < N ; i++) {
            A[i] = scanner.nextInt();
            total += A[i];
        }

        int count = 0;
        for (int i = 0 ; i < N ; i++) {
            if (A[i] * 4 * M >= total) count++;
            if (count >= M) {
                System.out.println("Yes");
                return;
            }
        }

        System.out.println("No");
    }
}
