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const data = require('./data')
const splitted = data
.split(/mask = /g)
.filter(d => d !== '\n')
.map(d => d.split(/\n/g))
.map(d => d.map((a, i) => (i > 0 ? a.match(/\d+/g) : a)).filter(a => a))
.map(d => d.map((a, i) => (i > 0 ? a.map(b => parseInt(b).toString(2).padStart(36, '0')) : a)))
const allVariations = (str, arr) => {
let i = str.indexOf('X');
if (i < 0) {
arr.push(str);
return;
}
const splitStr = str.split('');
let addZero = splitStr.slice();
let addOne = splitStr.slice();
addZero.splice(i, 1, '0');
addOne.splice(i, 1, '1');
allVariations(addZero.join(''), arr);
allVariations(addOne.join(''), arr );
}
const mem = {}
splitted.forEach(s => {
const mask = s[0]
const applyMask = (str) => (
str.split('').map((v, i) => (mask[i] === '0' ? v : mask[i])).join('')
)
let variations
s.forEach((m, i) => {
variations = []
if (i > 0) {
allVariations(applyMask(m[0]), variations)
variations.forEach(a => {
mem[parseInt(a, 2)] = parseInt(m[1], 2)
})
}
})
})
const sum = Object.values(mem).reduce((a, b) => a + b, 0)
console.log('Answer: ', sum)
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