N = input()
Nls = []
for i in range(len(N)):
    Nbin = bin(int(N[i],16))[2:]
    Nls.append(Nbin)
jointN = ''.join(Nls)
jointN = jointN[::-1]
import collections
cnt = collections.Counter()
for i in range(0,len(jointN),3):
    cnt[int(jointN[i:i+3][::-1],2)] += 1
maxc = max(cnt.values())
ansls = []
for i in range(8):
    if maxc == cnt[i]:
        ansls.append(i)
print(*ansls)