#include<stdio.h>

int main() {
   int i,j,n,m,tmp;
   int sum = 0,count = 0;
   int a[100];
   scanf("%d %d",&n,&m);
   for(i = 0;i < n;i++) {
     scanf("%d",&a[i]);
     sum += a[i];
   }
   for(i = 0;i < n;i++) {
     for(j = i;j < n;j++) {
       if(a[i] < a[j]) {
         tmp = a[i];
         a[i] = a[j];
         a[j] = tmp;
       }
     }
   }
   for(i = 0;i < m;i++) {
     if(a[i] >= sum/(4*m)) {
       count++;
     }
   }
   if(count == m) {
     printf("Yes\n");
   } else {
     printf("No\n");
   }

}
