n, x, m = map(int, input().split())
a = list(map(int, input().split()))
a.insert(0, 0)

while True:
    Min = min(n, m)
    k = a.index(max(a))
    if k <= Min:
        for i in range(1, k+1):
            a[i] = a[i] // 2
        m = m - k
    else:
        break

if max(a) < x:
    print("Yes")
else:
    print("No")