N,X,M = map(int, input().split())
A = [0]+list(map(int, input().split()))
while True:
    flag = 0
    for i in range(N,0,-1):
        if A[i]>=X:
            flag = i
            break
    if flag==0:
        ans = "Yes"
        break
    M -= flag
    if M<0:
        ans = "No"
        break
    for i in range(flag+1):
        A[i] = A[i]//2
print(ans)