#include<stdio.h>
int main(void)
{
    int N,M,a,b,c,A[100000];
    scanf("%d %d",&N,&M);
    for(int i =1; i<1000;++i)
    {
        scanf("%d",&A[i]);
    }
    for(int i =1; i<1000;++i)
    {
        a=a+A[i];
    }
    b = a/M;
	b = b/4;
    for(int h =1; h<1000;++h)
    {
         if (A[h]>b)
        {
            c = c+1;
        }else
        {
            c = c;
        }
    }

    if (M<c)
    {
        printf("Yes");
    }else
    {
        printf("No");
    }
    return 0;
}
