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+--- Part Two ---
+
+The line is moving more quickly now, but you overhear airport security talking about how passports
+with invalid data are getting through. Better add some data validation, quick!
+
+You can continue to ignore the cid field, but each other field has strict rules about what values
+are valid for automatic validation:
+
+- byr (Birth Year) - four digits; at least 1920 and at most 2002. - iyr (Issue Year) - four digits;
+at least 2010 and at most 2020. - eyr (Expiration Year) - four digits; at least 2020 and at most
+2030. - hgt (Height) - a number followed by either cm or in: - If cm, the number must be at least
+150 and at most 193. - If in, the number must be at least 59 and at most 76.
+
+
+
+- hcl (Hair Color) - a # followed by exactly six characters 0-9 or a-f. - ecl (Eye Color) - exactly
+one of: amb blu brn gry grn hzl oth. - pid (Passport ID) - a nine-digit number, including leading
+zeroes. - cid (Country ID) - ignored, missing or not.
+
+Your job is to count the passports where all required fields are both present and
+valid according to the above rules. Here are some example values:
+
+byr valid: 2002 byr invalid: 2003
+
+hgt valid: 60in hgt valid: 190cm hgt invalid: 190in hgt invalid: 190
+
+hcl valid: #123abc hcl invalid: #123abz hcl invalid: 123abc
+
+ecl valid: brn ecl invalid: wat
+
+pid valid: 000000001 pid invalid: 0123456789
+
+Here are some invalid passports:
+
+eyr:1972 cid:100 hcl:#18171d ecl:amb hgt:170 pid:186cm iyr:2018 byr:1926
+
+iyr:2019 hcl:#602927 eyr:1967 hgt:170cm ecl:grn pid:012533040 byr:1946
+
+hcl:dab227 iyr:2012 ecl:brn hgt:182cm pid:021572410 eyr:2020 byr:1992 cid:277
+
+hgt:59cm ecl:zzz eyr:2038 hcl:74454a iyr:2023 pid:3556412378 byr:2007
+
+Here are some valid passports:
+
+pid:087499704 hgt:74in ecl:grn iyr:2012 eyr:2030 byr:1980 hcl:#623a2f
+
+eyr:2029 ecl:blu cid:129 byr:1989 iyr:2014 pid:896056539 hcl:#a97842 hgt:165cm
+
+hcl:#888785 hgt:164cm byr:2001 iyr:2015 cid:88 pid:545766238 ecl:hzl eyr:2022
+
+iyr:2010 hgt:158cm hcl:#b6652a ecl:blu byr:1944 eyr:2021 pid:093154719
+
+Count the number of valid passports - those that have all required fields and
+valid values. Continue to treat cid as optional. In your batch file, how many passports
+are valid?
+
+