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

console.log('hey ! How old are u ? ')
process.stdin.on('data', (text) => {
    let age = parseInt(text);
    let year = 2018 - age;
    if (0 < age && age <= 99){
        console.log('You are born in '+ year);
    } else {
        console.log('soyez sérieux, dites votre VRAI age :');
        return process.stdin.on

    }
process.exit()
})