const fs = require('fs')
const readline = require('readline');

const readInterface = readline.createInterface({
    input: fs.createReadStream('input'),
    console: false
});


let passports = [];
let cPass = {};

readInterface.on('line', function(line) {
  if (line.length == 0) {
    passports.push(cPass);
    cPass = {};
    return;
  }

  line.split(' ').forEach(function(kv) {
    parts = kv.split(':');
    cPass[parts[0]] = parts[1];
  });

//  console.log(cPass);
});

let required = new Set(['byr', 'iyr', 'eyr', 'hgt', 'hcl', 'ecl', 'pid' ]);
let optional = new Set([ 'cid' ]);

function validKeys(passport) {
  let keys = new Set(Object.keys(passport));
  let missing = new Set([...required].filter(x => !keys.has(x)))

  return missing.size == 0;
}

function validBYR(passport) {
  let byr = Number(passport['byr']);

  return byr >= 1920 && byr <= 2002;
}

function validIYR(passport) {
  let iyr = Number(passport['iyr']);

  return iyr >= 2010 && iyr <= 2020;
}

function validEYR(passport) {
  let eyr = Number(passport['eyr']);

  return eyr >= 2020 && eyr <= 2030;
}

function validHGT(passport) {
  if (!passport.hasOwnProperty('hgt')) {
    return false;
  }

  let hgt = parseInt(passport['hgt']);

  if (passport['hgt'].endsWith('cm')) {
    return hgt >= 150 && hgt <= 193;
  }

  // inches
  return hgt >= 59 && hgt <= 76;
}

const validHCLs = /^#[a-f0-9]{6}$/;
function validHCL(passport) {
  return validHCLs.test(passport['hcl']);
}

const validECLs = new Set(['amb', 'blu', 'brn', 'gry', 'grn', 'hzl', 'oth']);
function validECL(passport) {
  return validECLs.has(passport['ecl']);
}

const validPIDs = /^[0-9]{9}$/
function validPID(passport) {
  return validPIDs.test(passport['pid']);
}

function valid(p) {
  return (validKeys(p) && validBYR(p) && validIYR(p) && validEYR(p) && validHGT(p) && validHCL(p) && validECL(p) && validPID(p));
}

readInterface.on('close', function(line) {
  // Save the last passport if it has any fields
  if (Object.keys(cPass).length > 0) {
    passports.push(cPass);
  }

  let count = passports.filter(valid).length;
  console.log(count);
});