#!/usr/bin/env python2
import time
import random
import fractions
s = list(raw_input())
n = int(''.join(s))
d = n
while time.clock() < 0.9:
    i = random.randint(0, len(s)-1)
    j = random.randint(0, len(s)-1)
    n += (ord(s[j]) - ord(s[i])) * 10 ** (len(s)-1-i)
    n += (ord(s[i]) - ord(s[j])) * 10 ** (len(s)-1-j)
    s[i], s[j] = s[j], s[i]
    d = fractions.gcd(d, n)
print(d)