process.stdin.resume()
process.stdin.setEncoding('utf8')

process.stdin.resume()
process.stdin.setEncoding('utf8')

console.log('How old are you ?')
process.stdin.on('data', (age) => {
    let birthYear = new Date()
    if (age > 0 && age < 100) {
        let year = birthYear.getFullYear() - age
        console.log('You are born in ' + year)
    } else {
        console.log('Enter your age (a number < 100)')
    }
    process.exit()
})