n, X, M = map(int, input().split())
A = list(map(int, input().split()))

s = []
for a in A:
    if a < X:
        s.append(0)
    else:
        cnt = 0
        current = a
        while current >= X:
            current //= 2
            cnt += 1
        s.append(cnt)

# Adjust to non-increasing
t = [0] * n
if n == 0:
    print("Yes")
    exit()

t[-1] = s[-1]
for i in range(n-2, -1, -1):
    t[i] = max(s[i], t[i+1])

total = sum(t)
if total <= M:
    print("Yes")
else:
    print("No")