n=input()
n="0x" + n
s=int(n,16) #10進数
s=oct(s)
m=len(s)
l=[]
for i in range(2,m):
    l.append(str(s[i]))
l3=[]
l2=list(set(l))
q=[]
for i in l2:
    l3.append([int(i),l.count(i)])
    q.append(l.count(i))

from operator import itemgetter
l3.sort(key=itemgetter(1))
l3.reverse()
ans=[]
for x in l3:
    if x[1]==max(q):
        ans.append(x[0])

print(*ans)