from collections import Counter

n = int(input(), base=16)
h = oct(n)
cnt = Counter(h[2:])
ma = 0
for k, v in cnt.items():
    if v > ma:
        ma = v

ans = []
for k, v in cnt.items():
    if v == ma:
        ans.append(int(k))

ans.sort()
print(*ans)