#int(input())
#map(int, input().split())
#list(map(int, input().split()))

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

f = 0
for i in range(N):
    j = N-1-i
    while f == 0:
        if A[j] >= X:
            for k in range(j+1):
                A[k] = A[k] >> 1
            M -= j+1
        else:
            break
        if M < 0:
            f = 1
            break
        # print(A)

if f == 1:
    print("No")
else:
    print("Yes")