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[] arr=new int[n];
		int sum=0;
		for(int i=0;i<n;i++) {
			arr[i]=sc.nextInt();
			sum+=arr[i];
		}
		boolean flag=false;
		int c=0;
		for(int i=0;i<n;i++) {
			if(arr[i]>=(1/(4.0*m))*sum) {
				c++;
			}
			if(c==m) {
				flag=true;
				break;
			}
		}
		System.out.println(flag? "Yes":"No");
		sc.close();
	}
} 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[] arr=new int[n];
		int sum=0;
		for(int i=0;i<n;i++) {
			arr[i]=sc.nextInt();
			sum+=arr[i];
		}
		boolean flag=false;
		int c=0;
		for(int i=0;i<n;i++) {
			if(arr[i]>=(1/(4.0*m))*sum) {
				c++;
			}
			if(c==m) {
				flag=true;
				break;
			}
		}
		System.out.println(flag? "Yes":"No");
		sc.close();
	}
} Main public static void main(String[] args) {
		Scanner sc =new Scanner(System.in);
		int n=sc.nextInt();
		int m=sc.nextInt();
		int[] arr=new int[n];
		int sum=0;
		for(int i=0;i<n;i++) {
			arr[i]=sc.nextInt();
			sum+=arr[i];
		}
		boolean flag=false;
		int c=0;
		for(int i=0;i<n;i++) {
			if(arr[i]>=(1/(4.0*m))*sum) {
				c++;
			}
			if(c==m) {
				flag=true;
				break;
			}
		}
		System.out.println(flag? "Yes":"No");
		sc.close();
	} main {
		Scanner sc =new Scanner(System.in);
		int n=sc.nextInt();
		int m=sc.nextInt();
		int[] arr=new int[n];
		int sum=0;
		for(int i=0;i<n;i++) {
			arr[i]=sc.nextInt();
			sum+=arr[i];
		}
		boolean flag=false;
		int c=0;
		for(int i=0;i<n;i++) {
			if(arr[i]>=(1/(4.0*m))*sum) {
				c++;
			}
			if(c==m) {
				flag=true;
				break;
			}
		}
		System.out.println(flag? "Yes":"No");
		sc.close();
	} 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[] arr=new int[n]; arr new int[n] n int sum=0; sum 0 for(int i=0;i<n;i++) {
			arr[i]=sc.nextInt();
			sum+=arr[i];
		} int i=0; int i=0; i 0 i<n i n i++ i++ i {
			arr[i]=sc.nextInt();
			sum+=arr[i];
		} {
			arr[i]=sc.nextInt();
			sum+=arr[i];
		} arr[i]=sc.nextInt() arr[i] arr i sc.nextInt() sc.nextInt sc sum+=arr[i] sum arr[i] arr i boolean flag=false; flag false int c=0; c 0 for(int i=0;i<n;i++) {
			if(arr[i]>=(1/(4.0*m))*sum) {
				c++;
			}
			if(c==m) {
				flag=true;
				break;
			}
		} int i=0; int i=0; i 0 i<n i n i++ i++ i {
			if(arr[i]>=(1/(4.0*m))*sum) {
				c++;
			}
			if(c==m) {
				flag=true;
				break;
			}
		} {
			if(arr[i]>=(1/(4.0*m))*sum) {
				c++;
			}
			if(c==m) {
				flag=true;
				break;
			}
		} if(arr[i]>=(1/(4.0*m))*sum) {
				c++;
			} arr[i]>=(1/(4.0*m))*sum arr[i] arr i (1/(4.0*m))*sum (1/(4.0*m)) 1 (4.0*m) 4.0 m sum {
				c++;
			} c++ c if(c==m) {
				flag=true;
				break;
			} c==m c m {
				flag=true;
				break;
			} flag=true flag true break; System.out.println(flag? "Yes":"No") System.out.println System.out System System.out flag? "Yes":"No" flag "Yes" "No" sc.close() sc.close sc 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[] arr=new int[n];
		int sum=0;
		for(int i=0;i<n;i++) {
			arr[i]=sc.nextInt();
			sum+=arr[i];
		}
		boolean flag=false;
		int c=0;
		for(int i=0;i<n;i++) {
			if(arr[i]>=(1/(4.0*m))*sum) {
				c++;
			}
			if(c==m) {
				flag=true;
				break;
			}
		}
		System.out.println(flag? "Yes":"No");
		sc.close();
	}
} public class Main {
	public static void main(String[] args) {
		Scanner sc =new Scanner(System.in);
		int n=sc.nextInt();
		int m=sc.nextInt();
		int[] arr=new int[n];
		int sum=0;
		for(int i=0;i<n;i++) {
			arr[i]=sc.nextInt();
			sum+=arr[i];
		}
		boolean flag=false;
		int c=0;
		for(int i=0;i<n;i++) {
			if(arr[i]>=(1/(4.0*m))*sum) {
				c++;
			}
			if(c==m) {
				flag=true;
				break;
			}
		}
		System.out.println(flag? "Yes":"No");
		sc.close();
	}
} 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[] arr=new int[n];
		int sum=0;
		for(int i=0;i<n;i++) {
			arr[i]=sc.nextInt();
			sum+=arr[i];
		}
		boolean flag=false;
		int c=0;
		for(int i=0;i<n;i++) {
			if(arr[i]>=(1/(4.0*m))*sum) {
				c++;
			}
			if(c==m) {
				flag=true;
				break;
			}
		}
		System.out.println(flag? "Yes":"No");
		sc.close();
	}
}
