my_string = ''.join(sorted(input()))
lower_case = []
upper = []
num = []

for c in my_string:
    if c.islower():
        lower_case.append(c)
    elif c.isupper():
        upper.append(c)
    else:
        num.append(c)
num = sorted(num, key=lambda x: (int(x) % 2 == 0, int(x)))
print(''.join(lower_case + upper + num))