AdventOfCode/Python/day6/solution.ipynb

{
 "cells": [
  {
   "cell_type": "code",
   "execution_count": 1,
   "metadata": {},
   "outputs": [],
   "source": [
    "import re"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "metadata": {},
   "outputs": [],
   "source": [
    "# Get puzzle input from input file\n",
    "\n",
    "puzzle_input = open(\"input\").read()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "metadata": {},
   "outputs": [],
   "source": [
    "def toggle(val: bool) -> bool:\n",
    "    return not val\n",
    "\n",
    "def turn_off(val: bool) -> bool:\n",
    "    return False\n",
    "\n",
    "def turn_on(val: bool) -> bool:\n",
    "    return True"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "# Part 1 #"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 4,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "400410\n"
     ]
    }
   ],
   "source": [
    "lights = [[False]*1000 for i in range(1000)]\n",
    "for command in puzzle_input.split(\"\\n\"):\n",
    "    if re.search(\"toggle\", command):\n",
    "        method = toggle\n",
    "    elif re.search(\"on\", command):\n",
    "        method = turn_on\n",
    "    else:\n",
    "        method = turn_off\n",
    "    \n",
    "    points = re.search(r\"(\\d+,\\d+) through (\\d+,\\d+)\", command)\n",
    "    point_a = tuple(map(int, points.group(1).split(\",\")))\n",
    "    point_b = tuple(map(int, points.group(2).split(\",\")))\n",
    "    \n",
    "    for a in range(point_a[0], point_b[0]+1):\n",
    "        for b in range(point_a[1], point_b[1]+1):\n",
    "            lights[a][b] = method(lights[a][b])\n",
    "\n",
    "print(list(item for sublist in lights for item in sublist).count(True))"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "# Part 2 #"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 5,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "15343601\n"
     ]
    }
   ],
   "source": [
    "def toggle(val: bool) -> bool:\n",
    "    return val+2\n",
    "\n",
    "def turn_off(val: bool) -> bool:\n",
    "    return max(val-1, 0)\n",
    "\n",
    "def turn_on(val: bool) -> bool:\n",
    "    return val+1\n",
    "\n",
    "lights = [[0]*1000 for i in range(1000)]\n",
    "for command in puzzle_input.split(\"\\n\"):\n",
    "    if re.search(\"toggle\", command):\n",
    "        method = toggle\n",
    "    elif re.search(\"on\", command):\n",
    "        method = turn_on\n",
    "    else:\n",
    "        method = turn_off\n",
    "    \n",
    "    points = re.search(r\"(\\d+,\\d+) through (\\d+,\\d+)\", command)\n",
    "    point_a = tuple(map(int, points.group(1).split(\",\")))\n",
    "    point_b = tuple(map(int, points.group(2).split(\",\")))\n",
    "    \n",
    "    for a in range(point_a[0], point_b[0]+1):\n",
    "        for b in range(point_a[1], point_b[1]+1):\n",
    "            lights[a][b] = method(lights[a][b])\n",
    "\n",
    "print(sum(list(item for sublist in lights for item in sublist)))"
   ]
  }
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