from collections import Counter
n=input()
n_16=int(n,16)
n_8=oct(n_16)
numlis=list(str(n_8))[2:]
c=Counter(numlis)
v=c.most_common()
v.append(("A",0))
numlist=[]
if len(v)>1:
    for i in range(1,len(v)):
        x1,y1=v[i-1]
        x2,y2=v[i]
        if y1==y2:
            numlist.append(x1)
        else:
            numlist.append(x1)
            break
else:
    print(v[0][1])
    exit()
numlist.sort()
print(*numlist)