# input = """987654321111111
# 811111111111119
# 234234234234278
# 818181911112111
# """
# input = "5767884946576766546558768767844146766387555466875566737775468663634866855528868858567496986549486867"
result = 0

with open("input.txt", "r") as file:
    input = file.read()
# читаем ввод построчно и возращает block
for block in input.splitlines():
# проверяем что в строке.
    for i in range(9, 0, -1):
        # print("i -",i)
        if block.count(str(i)) >= 1:
            if block.find(str(i)) + 1 == len(block):
                pass
            else:
                if block.count(str(i)) >= 2:
                    split = block.rindex(str(i),0,block.rindex(str(i))) +1
                    # print(split)
                else:
                    split = block.rindex(str(i)) +1
                ii = block[split:]
                # print(ii)
                for y in range(9, 0, -1):
                    # print("y -",y)
                    if ii.count(str(y)) >= 1:
                        print(f"in block {block},bestcombo is {i}{y}")
                        result += int(str(i) + str(y))
                        break
                break
print(f"result - {result}")