59 lines
1.8 KiB
TypeScript
59 lines
1.8 KiB
TypeScript
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const input = await Deno.readTextFile("input.txt");
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// const input = `Game 1: 3 blue, 4 red; 1 red, 2 green, 6 blue; 2 green
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// Game 2: 1 blue, 2 green; 3 green, 4 blue, 1 red; 1 green, 1 blue
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// Game 3: 8 green, 6 blue, 20 red; 5 blue, 4 red, 13 green; 5 green, 1 red
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// Game 4: 1 green, 3 red, 6 blue; 3 green, 6 red; 3 green, 15 blue, 14 red
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// Game 5: 6 red, 1 blue, 3 green; 2 blue, 1 red, 2 green`;
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const lines = input.split("\n");
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type ColorBox = {
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green: number;
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red: number;
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blue: number;
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}
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function parseInput(line: string){
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const m = /Game (\d+):/.exec(line);
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if (!m) {
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throw new Error("Invalid line: " + line)
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}
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const id = parseInt(m[1]);
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const rest = line.slice(m[0].length);
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const obj = rest.split(";").map(colorStr => {
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const obj: ColorBox = {
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red: 0,
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green: 0,
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blue: 0
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};
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const colors = colorStr.split(",");
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colors.forEach(x=> {
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const [number, color] = x.trim().split(" ");
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if (["blue", "green", "red"].indexOf(color) === -1) {
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throw new Error("Invalid color: " + color);
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}
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obj[color as keyof ColorBox] = parseInt(number);
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});
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return obj;
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});
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return {
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id,
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colorSets: obj
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}
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}
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const games = lines.map(parseInput);
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const availGames = games.map(game=> game.colorSets.reduce((a, b) =>{
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return {
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red: Math.max(a.red , b.red),
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green: Math.max(a.green , b.green),
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blue: Math.max(a.blue , b.blue)
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}
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}, {
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red: 0,
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green: 0,
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blue: 0
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}));
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const powersOfGames = availGames.map(x=> x.red * x.green * x.blue);
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const sum = powersOfGames.reduce((a, b) => a + b, 0);
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console.log(availGames, sum)
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