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2022-16 in js

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Julien Dessaux 2022-12-26 07:48:55 +01:00
parent db5e94e884
commit c9654e1ecc
Signed by: adyxax
GPG key ID: F92E51B86E07177E
7 changed files with 337 additions and 0 deletions
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44
2022/16-proboscidea-volcanium/.eslintrc.json Normal file
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{
"env": {
"es2021": true,
"node": true
},
"extends": [
"eslint:recommended",
"plugin:node/recommended"
],
"overrides": [
{
"files": ["*.js"],
"rules": {
"no-constant-condition": "off"
}
}
],
"parserOptions": {
"ecmaVersion": "latest",
"sourceType": "module"
},
"rules": {
"indent": [
"error",
"tab"
],
"linebreak-style": [
"error",
"unix"
],
"quotes": [
"error",
"double"
],
"semi": [
"error",
"always"
],
"node/no-unsupported-features/es-syntax": [
"error",
{ "ignores": ["modules"] }
]
}
}

10
2022/16-proboscidea-volcanium/example Normal file
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Valve AA has flow rate=0; tunnels lead to valves DD, II, BB
Valve BB has flow rate=13; tunnels lead to valves CC, AA
Valve CC has flow rate=2; tunnels lead to valves DD, BB
Valve DD has flow rate=20; tunnels lead to valves CC, AA, EE
Valve EE has flow rate=3; tunnels lead to valves FF, DD
Valve FF has flow rate=0; tunnels lead to valves EE, GG
Valve GG has flow rate=0; tunnels lead to valves FF, HH
Valve HH has flow rate=22; tunnel leads to valve GG
Valve II has flow rate=0; tunnels lead to valves AA, JJ
Valve JJ has flow rate=21; tunnel leads to valve II

76
2022/16-proboscidea-volcanium/first.js Normal file
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import * as fs from "fs";
import { PriorityQueue } from "./priority_queue.js";
const regexp = /Valve ([A-Z]+) has flow rate=(\d+); tunnels? leads? to valves? ([A-Z, ]+)/;
let valves = {};
let uv = []; // useful valves
fs.readFileSync("input", "utf8")
.trim()
.split("\n")
.map(line => {
let a = line.match(regexp);
valves[a[1]] = {
cost: undefined,
label: a[1],
links: a[3].split(", "),
rate: a[2],
computePathCostTo: function (target) {
Object.values(valves).forEach(v => v.cost = 0);
let nq = new PriorityQueue();
nq.enqueue(this, 0);
while (true) {
let n = nq.dequeue();
if (n.element.label === target) {
return n.element.cost + 1; // +1 to account for opening the valve
}
n.element.links.forEach(l => {
let v = valves[l];
if (v.cost === 0) {
v.cost = n.element.cost + 1;
nq.enqueue(v, v.cost);
}
});
}
},
};
if (a[2] > 0) {
uv.push(a[1]);
}
});
let paths = {};
uv.forEach(v => {
paths["AA"+v] = valves["AA"].computePathCostTo(v);
uv.forEach(w => {
if (v !== w) {
paths[v+w] = valves[v].computePathCostTo(w);
paths[w+v] = paths[v+w];
}
});
});
let max = 0;
let parcours = [{current: "AA", actives: uv, timeLeft: 30, pressure: 0}];
for(let i=0; i<parcours.length; i++) {
let p = parcours[i];
p.pressure += valves[p.current].rate * p.timeLeft;
if (max < p.pressure) {
max = p.pressure;
}
p.actives.forEach(v => {
const cost = paths[p.current+v];
if (p.timeLeft - cost > 0) {
parcours.push({
current:v,
actives:p.actives.filter(f => f !== v), // this creates a shallow copy
timeLeft: p.timeLeft - cost,
pressure: p.pressure,
});
}
});
}
console.log(max);

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2022/16-proboscidea-volcanium/input Normal file
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Valve XC has flow rate=0; tunnels lead to valves YK, AM
Valve ME has flow rate=0; tunnels lead to valves UU, SX
Valve EP has flow rate=0; tunnels lead to valves YS, QU
Valve GR has flow rate=0; tunnels lead to valves QZ, OG
Valve FA has flow rate=0; tunnels lead to valves DB, DP
Valve UJ has flow rate=0; tunnels lead to valves XN, CH
Valve QU has flow rate=0; tunnels lead to valves EP, YK
Valve OX has flow rate=19; tunnels lead to valves RI, PV
Valve VI has flow rate=0; tunnels lead to valves WI, XN
Valve IQ has flow rate=0; tunnels lead to valves QL, OG
Valve XO has flow rate=0; tunnels lead to valves GU, UI
Valve IY has flow rate=0; tunnels lead to valves VC, NT
Valve YS has flow rate=24; tunnel leads to valve EP
Valve XN has flow rate=7; tunnels lead to valves DG, UJ, VD, VI, OU
Valve AM has flow rate=6; tunnels lead to valves KA, NC, XC, TP, SI
Valve IH has flow rate=8; tunnels lead to valves TW, CH, WY, EC
Valve ZR has flow rate=18; tunnel leads to valve RI
Valve FP has flow rate=14; tunnels lead to valves DP, UF
Valve KA has flow rate=0; tunnels lead to valves VC, AM
Valve NC has flow rate=0; tunnels lead to valves UI, AM
Valve EC has flow rate=0; tunnels lead to valves IH, GU
Valve DG has flow rate=0; tunnels lead to valves AA, XN
Valve RI has flow rate=0; tunnels lead to valves OX, ZR
Valve NJ has flow rate=0; tunnels lead to valves YK, TW
Valve OG has flow rate=12; tunnels lead to valves GR, WY, IQ, UE
Valve IB has flow rate=0; tunnels lead to valves VB, UU
Valve RP has flow rate=0; tunnels lead to valves UI, OU
Valve OU has flow rate=0; tunnels lead to valves XN, RP
Valve NT has flow rate=0; tunnels lead to valves IY, AA
Valve MN has flow rate=0; tunnels lead to valves LX, VC
Valve SI has flow rate=0; tunnels lead to valves AM, AA
Valve VB has flow rate=0; tunnels lead to valves KT, IB
Valve UI has flow rate=4; tunnels lead to valves YI, XO, LX, NC, RP
Valve DL has flow rate=0; tunnels lead to valves GU, UE
Valve CH has flow rate=0; tunnels lead to valves UJ, IH
Valve WI has flow rate=0; tunnels lead to valves VI, VC
Valve GU has flow rate=11; tunnels lead to valves EC, XO, DL, SX
Valve KT has flow rate=17; tunnels lead to valves PV, VB
Valve TW has flow rate=0; tunnels lead to valves IH, NJ
Valve UE has flow rate=0; tunnels lead to valves DL, OG
Valve PV has flow rate=0; tunnels lead to valves KT, OX
Valve DP has flow rate=0; tunnels lead to valves FP, FA
Valve TP has flow rate=0; tunnels lead to valves VD, AM
Valve YI has flow rate=0; tunnels lead to valves AA, UI
Valve LX has flow rate=0; tunnels lead to valves UI, MN
Valve QZ has flow rate=0; tunnels lead to valves GR, UU
Valve DB has flow rate=23; tunnel leads to valve FA
Valve SX has flow rate=0; tunnels lead to valves ME, GU
Valve QL has flow rate=0; tunnels lead to valves AA, IQ
Valve YK has flow rate=16; tunnels lead to valves NJ, XC, QU
Valve VC has flow rate=5; tunnels lead to valves UF, KA, WI, IY, MN
Valve VD has flow rate=0; tunnels lead to valves TP, XN
Valve WY has flow rate=0; tunnels lead to valves IH, OG
Valve AA has flow rate=0; tunnels lead to valves YI, DG, QL, NT, SI
Valve UF has flow rate=0; tunnels lead to valves VC, FP
Valve UU has flow rate=15; tunnels lead to valves QZ, IB, ME

8
2022/16-proboscidea-volcanium/package.json Normal file
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{
"type": "module",
"dependencies": {
"eslint": "^8.30.0",
"eslint-plugin-node": "^11.1.0",
"jslint": "^0.12.1"
}
}

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2022/16-proboscidea-volcanium/priority_queue.js Normal file
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export class QElement {
constructor(element, priority) {
this.element = element;
this.priority = priority;
}
}
export class PriorityQueue {
constructor() {
this.items = [];
}
enqueue(element, priority) {
var qElement = new QElement(element, priority);
var contain = false;
for (var i = 0; i < this.items.length; i++) {
if (this.items[i].priority > qElement.priority) {
this.items.splice(i, 0, qElement);
contain = true;
break;
}
}
if (!contain) {
this.items.push(qElement);
}
}
dequeue() {
if (this.isEmpty()){
throw "Attempting to dequeue an empty queue";
}
return this.items.shift();
}
front() {
if (this.isEmpty()){
throw "Attempting to front an empty queue";
}
return this.items[0];
}
rear() {
if (this.isEmpty()){
throw "Attempting to rear an empty queue";
}
return this.items[this.items.length - 1];
}
isEmpty() {
return this.items.length == 0;
}
printPQueue() {
var str = "";
for (var i = 0; i < this.items.length; i++)
str += this.items[i].element + " ";
return str;
}
}

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2022/16-proboscidea-volcanium/second.js Normal file
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import * as fs from "fs";
import { PriorityQueue } from "./priority_queue.js";
const regexp = /Valve ([A-Z]+) has flow rate=(\d+); tunnels? leads? to valves? ([A-Z, ]+)/;
let valves = {};
let uv = []; // useful valves
fs.readFileSync("input", "utf8")
.trim()
.split("\n")
.map(line => {
let a = line.match(regexp);
valves[a[1]] = {
cost: undefined,
label: a[1],
links: a[3].split(", "),
rate: a[2],
computePathCostTo: function (target) {
Object.values(valves).forEach(v => v.cost = 0);
let nq = new PriorityQueue();
nq.enqueue(this, 0);
while (true) {
let n = nq.dequeue();
if (n.element.label === target) {
return n.element.cost + 1; // +1 to account for opening the valve
}
n.element.links.forEach(l => {
let v = valves[l];
if (v.cost === 0) {
v.cost = n.element.cost + 1;
nq.enqueue(v, v.cost);
}
});
}
},
};
if (a[2] > 0) {
uv.push(a[1]);
}
});
let paths = {};
uv.forEach(v => {
paths["AA"+v] = valves["AA"].computePathCostTo(v);
uv.forEach(w => {
if (v !== w) {
paths[v+w] = valves[v].computePathCostTo(w);
paths[w+v] = paths[v+w];
}
});
});
let max = 0;
let parcours = [{current: "AA", actives: uv, steps: [], timeLeft: 26, pressure: 0}];
for(let i=0; i<parcours.length; i++) {
let p = parcours[i];
p.pressure += valves[p.current].rate * p.timeLeft;
if (max < p.pressure) {
max = p.pressure;
}
p.actives.forEach(v => {
const cost = paths[p.current+v];
if (p.timeLeft - cost > 0) {
parcours.push({
current:v,
actives:p.actives.filter(f => f !== v), // this creates a shallow copy
steps: [...p.steps, v],
timeLeft: p.timeLeft - cost,
pressure: p.pressure,
});
}
});
}
parcours.sort((a, b) => b.pressure-a.pressure); // let's process all these paths and look for two that do not intersec and improve our max
for (let i = 0; i < parcours.length; i++) {
if (parcours[i].pressure + parcours[0].pressure < max) continue;
for (let j = i+1; j < parcours.length; j++) {
if (parcours[i].pressure+parcours[j].pressure < max) continue;
if (parcours[i].steps.every(s => !parcours[j].steps.includes(s)))
if (parcours[i].pressure+parcours[j].pressure > max) {
max = parcours[i].pressure+parcours[j].pressure;
}
}
}
console.log(max);