n = abs(int(input()))
print(min(map(int, str(n))))
m = 9
while True:
n, d = divmod(n, 10)
m = min(m, d)
if n == 0:
break
print(m)
biA9IGFicyhpbnQoaW5wdXQoKSkpCgpwcmludChtaW4obWFwKGludCwgc3RyKG4pKSkpCgptID0gOQoKd2hpbGUgVHJ1ZToKICAgIG4sIGQgPSBkaXZtb2QobiwgMTApCiAgICBtID0gbWluKG0sIGQpCiAgICBpZiBuID09IDA6CiAgICAgICAgYnJlYWsKCnByaW50KG0p