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' ]);

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 = 0;
  passports.forEach(function(passport) {
    let keys = new Set(Object.keys(passport));
    let missing = new Set([...required].filter(x => !keys.has(x)))

    console.log(passport);
    console.log(missing);
    console.log("");

    if (missing.size == 0) {
      count++;
    }
  });
  
  console.log(count);
});