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