def problem_p02600(input_data):
    a = int(eval(input_data))

    b = int(a // 200)

    if b == 2:

        return 8

    elif b == 3:

        return 7

    elif b == 4:

        return 6

    elif b == 5:

        return 5

    elif b == 6:

        return 4

    elif b == 7:

        return 3

    elif b == 8:

        return 2

    elif b == 9:

        return 1
