def fake1(n,x,m,A):
    a=A[:]
    cnt=0
    while 1:
        if max(a)<x:break
        ma=max(a)
        ind=10**10
        for i in range(n):
            if a[i]==ma:ind=i
        for i in range(ind+1):
            a[i]//=2
            cnt+=1
    if cnt<=m:return "Yes"
    return "No"
n,x,m=map(int,input().split())
a=list(map(int,input().split()))
print(fake1(n,x,m,a))