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const data = require('./data')
const [player1, player2] = data.split('\n\n').filter(Boolean)
.map(p => p.split(/\n/g).filter(Boolean).slice(1))
const round = () => {
const c1 = player1.shift()
const c2 = player2.shift()
if (parseInt(c1) > parseInt(c2)) {
player1.push(c1, c2)
} else {
player2.push(c2, c1)
}
}
while (player1.length>0 && player2.length>0) { round() }
const cards = player1.length > 0 ? player1 : player2
const score = cards.reverse().map((c, i) => parseInt(c) * (i+1)).reduce((a,b) => a + b, 0)
console.log('Answer: ', score)
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