The translation from the Berland language into the Birland language is not an easy task. Those languages are very similar: a berlandish word differs from a birlandish word with the same meaning a little: it is spelled (and pronounced) reversely. For example, a Berlandish word code corresponds to a Birlandish word edoc. However, it's easy to make a mistake during the «translation». Vasya translated word *s* from Berlandish into Birlandish as *t*. Help him: find out if he translated the word correctly.
The first line contains word *s*, the second line contains word *t*. The words consist of lowercase Latin letters. The input data do not consist unnecessary spaces. The words are not empty and their lengths do not exceed 100 symbols.
def more_lower(string):
    count = 0
    for i in range(len(string)):
        if(string[i] == string[i].lower()):
            count += 1

    if(count >= len(string)/2):
        return True
    else:
        return False


string = input()
if(more_lower(string)):
    print(string.lower())
else:
    print(string.upper())