2024 day 13

2024/13/runner.ts

@@ -0,0 +1,29 @@
+import { readFile } from "fs/promises";
+import { taskOne, taskTwo } from "./task";
+
+async function main() {
+    let lastArgument = process.argv.pop() as string;
+    let taskNumber = 1;
+    let isTest = false;
+
+    if (lastArgument === "test") {
+        isTest = true;
+        taskNumber = parseInt(process.argv.pop() as string);
+    } else {
+        taskNumber = parseInt(lastArgument)
+    }
+
+    const fileToLoad = isTest ? "test.in" : "solve.in";
+    const fileContents = await readFile(fileToLoad, "utf-8")
+
+    const lines = fileContents.split("\n");
+
+    if (taskNumber === 1) {
+        await taskOne(lines);
+    }
+    if (taskNumber === 2) {
+        await taskTwo(lines);
+    }
+}
+
+void main();

2024/13/task.ts

@@ -0,0 +1,106 @@
+import {lcmArr, lcm, gcd, ComplexNumber,  Stack, Queue, JsonSet, FunctionSet, MinHeap } from '../../base'
+
+export async function taskOne(input: string[]): Promise<void> {
+
+    let i = 0
+    const buttons: any[] = []
+    while(i < input.length) {
+        const ra = /Button A: X([0-9+-]*), Y([0-9+-]*)/.exec(input[i])!
+        const rb = /Button B: X([0-9+-]*), Y([0-9+-]*)/.exec(input[i+1])!
+        const rg = /Prize: X=([0-9+-]*), Y=([0-9+-]*)/.exec(input[i+2])!
+        i+= 4
+        buttons.push({
+            ax: Number(ra[1]),
+            ay: Number(ra[2]),
+            bx: Number(rb[1]),
+            by: Number(rb[2]),
+            x: Number(rg[1]),
+            y: Number(rg[2])
+        })
+    }
+    function getPrize(r: any) {
+        let min = Infinity
+        for (let j = 0; j <= 100; j++) {
+            for (let bs = 0; bs <= 100; bs++) {
+                if (j * r.ax + bs * r.bx != r.x) continue
+                if (j * r.ay + bs * r.by != r.y) continue
+                const cost = j*3+bs
+                if (cost < min) min = cost
+            }
+        }
+        return min
+    }
+
+    console.log(buttons.map(getPrize).filter(i => i != Infinity).reduce((a,b)=>a+b,0))
+}
+
+export async function taskTwo(input: string[]): Promise<void> {
+
+    let i = 0
+    const buttons: any[] = []
+    while(i < input.length) {
+        const ra = /Button A: X([0-9+-]*), Y([0-9+-]*)/.exec(input[i])!
+        const rb = /Button B: X([0-9+-]*), Y([0-9+-]*)/.exec(input[i+1])!
+        const rg = /Prize: X=([0-9+-]*), Y=([0-9+-]*)/.exec(input[i+2])!
+        i+= 4
+        buttons.push({
+            ax: Number(ra[1]),
+            ay: Number(ra[2]),
+            bx: Number(rb[1]),
+            by: Number(rb[2]),
+            x: Number(rg[1]) + 10000000000000,
+            y: Number(rg[2]) + 10000000000000
+        })
+    }
+    function getPrize(r: any) {
+        const b = (r.y - r.x * (r.ay / r.ax)) / (r.by - r.bx * (r.ay / r.ax))
+        const rb = round(b)
+        if (isNaN(b) || rb == Infinity) return Infinity
+        const a  = (r.x - rb * r.bx) / r.ax
+        const ra = round(a)
+        if (isNaN(a) || ra == Infinity) return Infinity
+        return rb+ra*3  
+    }
+
+    function round(x: number) {
+        const r = Math.round(x)
+        if (Math.abs(r - x) < 0.001) return r
+        return Infinity
+    }
+
+    console.log(buttons.map(getPrize).filter(i => i != Infinity).reduce((a,b)=>a+b,0))
+}
+
+
+
+/*
+const grid = input.map(i => i.split(''))
+
+for (let y = 0; y < grid.length; y++) {
+    for (let x = 0; x < grid[y].length; x++) {
+
+    }
+}
+
+
+const queue = new Queue<State>()
+const visited = new Set<string>()
+queue.push()
+
+while(!queue.isEmpty()) {
+    const q = queue.pop()
+    const k = q.x + '|' + q.y
+    if (visited.has(k)) continue
+    visited.add(k)
+
+    for () {
+        queue.push()
+    }
+}
+
+interface State {
+    x: number
+    y: number
+}
+
+*/

2024/README.md

@@ -14,4 +14,5 @@
 |9|TypeScript|4996 / 4452|
 |10|Typescript|673 / 442|
 |11|Typescript|414 / 803|
-|12|Typescript|1588 / 4633|
+|12|Typescript|1588 / 4633|
+|13|Typescript|675 / 1094|

README.md

@@ -1,6 +1,6 @@
 # My Advent of Code Solutions
 
-![](https://img.shields.io/badge/Total%20stars%20⭐-471yellow)
+![](https://img.shields.io/badge/Total%20stars%20⭐-473yellow)
 
 ## What language do I use?
 Whatever I feel like today. But it will most likely either be Java, Python, C++, Typescript or Haskell
@@ -9,7 +9,7 @@ Whatever I feel like today. But it will most likely either be Java, Python, C++,
 
 <h3>2024</h3>
 
-![](https://img.shields.io/badge/stars%20⭐-24-yellow)
+![](https://img.shields.io/badge/stars%20⭐-26-yellow)
 
 |Day|Language|
 |--|--|
@@ -25,6 +25,7 @@ Whatever I feel like today. But it will most likely either be Java, Python, C++,
 |10|TypeScript|
 |11|TypeScript|
 |12|TypeScript|
+|13|TypeScript|
 
 
 <h3><a href="2023/README.md">2023</a></h3>