s = input()


letters = list()
numbers = list()


for ch in s:
    if ch.isdigit():
        numbers.append(ch)
    else:
        letters.append(ch) 

letters = sorted(letters)
numbers = sorted(numbers)



# Numbers sorting accordingly odd first even next

finalNumbers = [n for n in numbers if int(n)%2 != 0] + [n for n in numbers if int(n)%2== 0]


# letters sorting accordingly uppercase letters afterwards and lowercase letters before

finalLetters = [ch for ch in letters if ch != ch.upper()] + [ch for ch in letters if ch == ch.upper()]


# Final list
     
print("".join(finalLetters+finalNumbers))