#include <stdio.h>
 
int main(void)
{
 
    int n,m,a[1000],x=0,y=0,w=0,i;
 
    scanf("%d%d",&n,&m);
 
    for(i=0;i<n;i++){
        scanf("%d",&a[i]);
        x=x+a[i];
    }
 
     y=(double)1/4*m;
 
     for(i=0;i<n;i++){
         if(a[i]>y) w++;
     }
 
     if(m<=w)  printf("Yes\n");
     else if(m>w)  printf("No\n");
 
     
 
     return 0;
}