text: str

with open("input.txt") as f:
    text = f.read()

total: int  = 0

for line in text.splitlines():
    lst = [int(char) for char in line]
    result: str = ""
    start_index: int = 0
    for i in range(0, 12):
        stop_index: int = i - 11 if i != 11 else len(lst)
        sublst = lst[start_index:stop_index]
        max_value = max(sublst)
        result += str(max_value)
        start_index = start_index + sublst.index(max_value) + 1
    total += int(result)


print(total)