import collections
N = input()
O = list(format(int(N, 16),'o'))
C = collections.Counter(O)
CNT = [0]*8
for k,v in C.items():
    CNT[int(k)]=v
ANS = []
for i in range(8):
    if CNT[i]==max(CNT):
        ANS.append(i)
print(*ANS)