input_file = "input.txt"


def letter_count():
    valid_passwords = 0

    with open(input_file) as passwords:
        line = passwords.readline()
        while line and line != "\n":
            elements = line.split(" ")
            min_req, max_req = elements[0].split("-")
            password_count = elements[2].count(elements[1][0])
            if int(min_req) <= password_count <= int(max_req):
                valid_passwords += 1

            line = passwords.readline()

    print(f"There are {valid_passwords} valid passwords")


def letter_position():
    valid_passwords = 0

    with open(input_file) as passwords:
        line = passwords.readline()
        while line and line != "\n":
            elements = line.split(" ")
            first_pos, second_pos = elements[0].split("-")
            if (elements[2][int(first_pos) - 1] == elements[1][0]) ^ (elements[2][int(second_pos) - 1] == elements[1][0]):
                valid_passwords += 1

            line = passwords.readline()

    print(f"There are {valid_passwords} valid passwords")