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file = File.read('input.txt')
records = file.split "\n\n"
fields = [ 'byr', 'iyr', 'eyr', 'hgt', 'hcl', 'ecl', 'pid' ]
regexes = [
/^byr:(19[2-9]\d|200[0-2])$/,
/^iyr:(201\d|2020)$/,
/^eyr:(202\d|2030)$/,
/^hgt:((1[5-8]\d|19[0-3])cm|(59|6\d|7[0-6])in)$/,
/^hcl:#[0-9a-f]{6}$/,
/^ecl:(amb|blu|brn|gry|grn|hzl|oth)$/,
/^pid:\d{9}$/
]
count = 0
records.each do |record|
fields_correct = 0
record.split.each do |entry|
if regexes.any? {|r| r.match?(entry)}
fields_correct += 1
end
end
if fields_correct == 7
count += 1
end
end
puts count
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