Rage Quit

text = input()
to_upper = ''
rage = ''
times = 0
i = 0

def manage_char(a: int, lst):
    if lst[a + 1].isdigit():
        return int(f'{lst[a]}{lst[a + 1]}')
    else:
        if to_upper:
            return int(lst[i])

while i < len(text):
    char = text[i]
    if char.isdigit():
        if i == len(text) - 1:
            times = int(char)
        elif (i + 1) < len(text):
            times = manage_char(i, text)
        if to_upper:
            rage += to_upper * times
            to_upper = ''
    else:
        to_upper += char.upper()
    i += 1

print(f'Unique symbols used: {len(set(rage))}')
print(rage)