package main

import . "fmt"
import . "os"
import bf "bufio"

func main() {
	rd:=bf.NewReader(Stdin)
	var n,x,m int
	Fscan(rd,&n,&x,&m)
	ok := true
	var r int
	a := make([]int, n)
	for i := range a {
		Fscan(rd,&a[i])
		if a[i] >= x {
			ok = false
			r = i
		}
	}
	if ok {
		Println("Yes")
		return
	}
	for m > 0 {
		ok := true
		k := min(r+1, m)
		if k < r+1 {
			Println("No")
			return
		}
		for i := range a {
			if i < k {
				a[i] /= 2
			}
			if a[i] >= x {
				ok = false
				r = i
			}
		}
		if ok {
			Println("Yes")
			return
		}
		m -= k
	}
	Println("No")
}