n = 18
p = []
while n:
    p.append(n % 2)
    n = n // 2
while p:
    print(p.pop(), end='')

3dd30d261c442d58f3626476e532a66420c150de
<mask token>

<mask token>
while n:
    p.append(n % 2)
    n = n // 2
while p:
    print(p.pop(), end='')

n = 18
p = []
while n:
    p.append(n % 2)
    n = n // 2
while p:
    print(p.pop(), end='')
