import java.util.Scanner;

public class Main { public static void main(String...args){
        Scanner sc = new Scanner(System.in); int N = sc.nextInt(); int M = sc.nextInt(); int t = 0; int[] A = new int[N];
        for(int i=0;i<N;i++){
            A[i] = sc.nextInt();
            t = t + A[i];
        } int count = 0;
        for(int i=0;i<N;i++){ if (A[i] >= (t * 0.25/ M)) count++;}
        if(count>=M) System.out.println("Yes");
        else System.out.println("No"); }
}
/tmp/hf-datasets-cache/medium/datasets/42704881117311-config-parquet-and-info-qiankunmu-Project_CodeNet-896c9d36/hub/datasets--qiankunmu--Project_CodeNet_Python800_and_Java250/snapshots/c899fde44a77ba1cc14973ed3de064e4ff3aadc7/Project_CodeNet_Java250.tar.gz