from collections import Counter


def convert_N(v, n):
    ret = []
    while v > 0:
        ret.append(v % n)
        v //= n
    return ret[::-1]


N = input()
# print(int(N, 16))
hachi = convert_N(int(N, 16), 8)
cnt = list(Counter(hachi).items())
cnt.sort(key=lambda x: x[1], reverse=True)
vmax = cnt[0][1]
ans = []
for i in range(len(cnt)):
    if cnt[i][1] == vmax:
        ans.append(cnt[i][0])
ans.sort()
print(*ans)