N = input()
if not(1<=len(N)<=200):
    print('error')
L = []
for x in N:
    n = int(x, 16)
    b = format(n, 'b')
    L.append(b)
B = ''.join(L)
if len(B)%3==1:
    B = '00' + B 
if len(B)%3==2:
    B = '0' + B

EX = ['000','001','010','011','100','101','110','111']
CNT = [0]*8
for i in range(len(B)//3):
    o = B[i*3:i*3+3]
    CNT[EX.index(o)]+=1

ANS = []
for i in range(8):
    if CNT[i]==max(CNT):
        ANS.append(i)
print(*ANS)