2020-12-05 08:27:46 +00:00
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import re
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2020-12-05 08:28:55 +00:00
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m=lambda x:None!=re.match(r'(by.:(1...|200[0-2])|iyr:20(1.|20)|eyr:20(2.|30)|hgt:...(n|cm)|hc.:#.{6}|ec.:..[buynlh]|pi.:.{9})$',x)
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2020-12-05 08:27:46 +00:00
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print(sum(map(lambda x:(lambda x:6<sum(map(m,x)))(x.split()),open(0).read().split("\n\n"))))
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