process.stdin.resume()
process.stdin.setEncoding('utf8')
const dateNow = 2019;



console.log('How old are you ?')
process.stdin.on('data', (age) => {
    let birthDate
    if (isNaN(age) === false && age < 99 && age < dateNow) {

        birthDate = dateNow - age;
        console.log('You was born in ' + birthDate);

    } else {
        console.log('Try again');
    }

    process.exit()
});