FILE = "input.txt"

def main():
    return sum(max_for_line(line.strip()) for line in open(FILE))

def max_for_line(line: str) -> int:
    voltage = 0
    for m in range(11, -1, -1):
        part = line[:-m] if m > 0 else line
        battery = max(int(n) for n in part)
        line = line[line.index(str(battery))+1:]
        voltage += battery * (10**m)
    return voltage

if __name__ == "__main__":
    print(main())