import sys
from collections import *
from functools import cache, partial
from itertools import *
from pprint import pprint
from typing import Any, Final

try:
    from icecream import ic
except ImportError:  # Graceful fallback if IceCream isn't installed.
    ic = lambda *a: None if not a else (a[0] if len(a) == 1 else a)  # noqa
debug = partial(print, file=sys.stderr)
dpprint = partial(pprint, stream=sys.stderr)
sys.setrecursionlimit(10 ** 6)
MOD=998244353

S = list(input())
X = []
Y = []
for s in S:
    if s.isdigit():
        Y.append(s)
    else:
        X.append(s)

X = X[::-1]

ans = "".join(X) + "".join(Y)
print(ans)
ic(X)
ic(Y)