start = 272091
end = 815432

index = start

count = 0


def ascending(index):
    for i in range(len(str(index)) - 1):

        a, b = str(index)[i], str(index)[i + 1]

        if a > b:
            index += 10 ** (len(str(index)) - i - 2) * abs(int(b) - int(a))
            return ascending(index)
            break
    return index


while True:
    index = ascending(index)

    if index > end:
        break

    for i in range(len(str(index)) - 1):
        a, b = str(index)[i], str(index)[i + 1]

        if a == b:
            count += 1
            print(index)
            break

    index += 1

print(count)