N=input()
T={x:i for i,x in enumerate("0123456789ABCDEF")}

X=0
for n in N:
    X=16*X+T[n]

Z=oct(X)
Y=[0]*8
for z in Z[2:]:
    Y[int(z)]+=1

alpha=max(Y)
print(*[i for i in range(8) if Y[i]==alpha])