n, x, m = map(int, input().split())
d = [0] * n
for i, a in enumerate(map(int, input().split())):
    cnt = 0
    while x <= a:
        a //= 2
        cnt += 1
    d[i] = cnt
for i in range(n - 1)[::-1]:
    d[i] = max(d[i], d[i+1])
print('Yes' if sum(d) <= m else 'No')