09. Rage Quit

string = input().upper()
unique_symbols = len(set([el for el in string if not el.isdigit()]))
print(f'Unique symbols used: {unique_symbols}')

symbols = ''
digits = ''
for char in range(len(string)):
    if string[char].isdigit():
        digits += string[char]
        if char + 1 < len(string) and not string[char+1].isdigit() or char + 1 == len(string):
            print(symbols * int(digits), end='')
            symbols = ''
            digits = ''
    else:
        symbols += string[char]