Rage Quit

def get_digits(stri):
    out = "0"
    for number in range(len(stri)):
        if stri[:number + 1].isdigit():
            out = stri[:number + 1]
            continue
        break
    return int(out)

def split_by_digit(stri: str):
    lis = []
    index = 0
    while len(stri) != index:
        if stri[index].isdigit():
            multiplyer = get_digits(stri[index:])
            lis.append((stri[:index], multiplyer))
            stri = stri[index + len(str(multiplyer)):]
            index = 0
            continue
        index += 1
    return lis

def dict_to_string(dictionary: list):
    return "". join([key[0] * key[1] for key in dictionary])


string = input()
out = dict_to_string(split_by_digit(string)).upper()
print(f"Unique symbols used: {len(set(out))}")
print(out.replace("\\N","\n"))