import re
from functools import reduce

lines = (list(map(lambda a: a.split(':'), x.strip().split())) for x in open("input.txt"))

passport = {}
count = 0
must_have = {'iyr', 'hcl', 'hgt', 'pid', 'ecl', 'eyr', 'byr'}


def check_passport(pp):
    valid = len(set(pp).intersection(must_have)) == len(must_have)
    if not valid:
        return 0
    checks = [
        re.match("^[0-9]{4}$", pp['byr']) and 1920 <= int(pp['byr']) <= 2002,
        re.match("^[0-9]{4}$", pp['iyr']) and 2010 <= int(pp['iyr']) <= 2020,
        re.match("^[0-9]{4}$", pp['eyr']) and 2020 <= int(pp['eyr']) <= 2030,
        re.match("^(1([5-8][0-9]|9[0-3])cm|(59|6[0-9]|7[0-6])in)$", pp['hgt']),
        re.match("^#[0-9a-f]{6}$", pp['hcl']),
        re.match("^(amb|blu|brn|gry|grn|hzl|oth)$", pp['ecl']),
        re.match("^[0-9]{9}$", pp['pid'])
    ]
    if not reduce(lambda a, b: a and b, checks, True):
        return 0
    return 1


for line in lines:
    if len(line) == 0:
        count += check_passport(passport)
        passport = {}
    for key, val in line:
        passport[key] = val
count += check_passport(passport)
print(count)