from collections import defaultdict
import sys
readline=sys.stdin.readline
write=sys.stdout.write

N,X,M=map(int,readline().split())
cnt=[]
for a in map(int,readline().split()):
    c=0
    while a>=X:
        a//=2
        c+=1
    cnt.append(c)
for i in range(N-2,-1,-1):
    cnt[i]=max(cnt[i],cnt[i+1])
if sum(cnt)<=M:
    ans="Yes"
else:
    ans="No"
print(ans)