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const data = require('./data')
const lines = data.split(/\n/g).filter(Boolean)
const ev = (str) => {
let spl = str.split(' ')
while(spl.length > 1) {
spl = [eval(spl.slice(0, 3).join(''))].concat(spl.slice(3))
}
return spl[0]
}
const evPar = (str) => {
while(/\(/.test(str)) {
str = str.replace(/\(([^()]+)\)/g, (match, par) => ev(par))
}
return ev(str)
}
let sum = 0
lines.forEach(l => sum += evPar(l))
console.log('Answer: ', sum)
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