const fs = require('fs');

const input = fs.readFileSync(__dirname + '/input.txt', 'utf8');

interface Coord {
    x: number,
    y: number,
}

interface Bot {
    pos: Coord,
    vel: Coord,
}

const bots: Array<Bot> = [];

input.split("\n").forEach((line: string) => {
    const matches = line.match(/p=(-?\d+),(-?\d+) v=(-?\d+),(-?\d+)/);
    if (!matches) {
        return;
    }
    bots.push({
        pos: { x: parseInt(matches[1]), y: parseInt(matches[2]) },
        vel: { x: parseInt(matches[3]), y: parseInt(matches[4]) },
    });
});

const width = 101;
const height = 103;

const seconds = 100;

const quads = [0, 0, 0, 0];

bots.forEach((bot) => {
    let newX = (bot.pos.x + (bot.vel.x * seconds)) % width;
    if (newX < 0) {
        newX = width + newX;
    }
    bot.pos.x = newX;
    let newY = (bot.pos.y + (bot.vel.y * seconds)) % height;
    if (newY < 0) {
        newY = height + newY;
    }
    bot.pos.y = newY;
    if (newX < (width - 1) / 2 && newY < (height - 1) / 2) {
        quads[0]++;
    } else if (newX > (width - 1) / 2 && newY < (height - 1) / 2) {
        quads[1]++;
    } else if (newX < (width - 1) / 2 && newY > (height - 1) / 2) {
        quads[2]++;
    } else if (newX > (width - 1) / 2 && newY > (height - 1) / 2) {
        quads[3]++;
    }
});

console.log(quads);
console.log(quads.reduce((c, n) => c * n, 1));