#!/usr/bin/python3
import re

def byr_valid(s):
    try:
        yr = int(s)
        return 1920 <= yr <= 2002
    except:
        return False

def iyr_valid(s):
    try:
        yr = int(s)
        return 2010 <= yr <= 2020
    except:
        return False

def eyr_valid(s):
    try:
        yr = int(s)
        return 2020 <= yr <= 2030
    except:
        return False

def hgt_valid(s):
    try:
        m = re.fullmatch(r"(\d+)(cm|in)", s)
        if m.group(2) == "cm":
            return 150 <= int(m.group(1)) <= 193
        elif m.group(2) == "in":
            return 59 <= int(m.group(1)) <= 76
        else:
            return False
    except:
        return False

def hcl_valid(s):
    return bool(re.fullmatch(r"#[0-9a-f]{6}", s))

def ecl_valid(s):
    return s in ("amb", "blu", "brn", "gry", "grn", "hzl", "oth")

def pid_valid(s):
    return bool(re.fullmatch(r"[0-9]{9}", s))

checks = {
    "byr": byr_valid, "iyr": iyr_valid, "eyr": eyr_valid,
    "hgt": hgt_valid, "hcl": hcl_valid, "ecl": ecl_valid,
    "pid": pid_valid,}

valid_count = 0
with open("input") as fh:
    all_data = fh.read()
    passport_strings = all_data.split("\n\n")
    for ps in passport_strings:
        fields = ps.split()
        passport = {}
        for f in fields:
            k, v = f.split(":")
            passport[k] = v
        is_valid = True
        for f, c in checks.items():
            is_valid = is_valid and f in passport and c(passport[f])
        valid_count += is_valid
print(valid_count)