rage_quit

text = input()
start_index = 0
rage_message = ''
for i in range(len(text)):

    if text[i].isdigit():
        if (i + 1 < len(text) and not text[i+1].isdigit()) or i == len(text) - 1:
            repeating_text = text[start_index:i]
            rage_message += repeating_text.upper() * int(text[i])
            start_index = i + 1
        elif i + 1 < len(text) and text[i+1].isdigit():
            repeating_text = text[start_index:i]
            rage_message += repeating_text.upper() * int(text[i]+text[i+1])
            start_index = i + 2

unique_symbols = len(set(rage_message))

print(f"Unique symbols used: {unique_symbols}\n{rage_message}")