{
 "cells": [
  {
   "cell_type": "code",
   "execution_count": 1,
   "metadata": {},
   "outputs": [],
   "source": [
    "import aocd\n",
    "\n",
    "data = aocd.get_data(year=2017, day=1)\n",
    "inputvalue = data.strip()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Part 1: 1175\n"
     ]
    }
   ],
   "source": [
    "def captcha_next(inputvalue):\n",
    "    same_as_next = (\n",
    "        digit\n",
    "        for digit, next in zip(inputvalue, inputvalue[1:] + inputvalue[0])\n",
    "        if digit == next\n",
    "    )\n",
    "    return sum(map(int, same_as_next))\n",
    "\n",
    "\n",
    "tests = {\n",
    "    \"1122\": 3,\n",
    "    \"1111\": 4,\n",
    "    \"1234\": 0,\n",
    "    \"91212129\": 9,\n",
    "}\n",
    "for in_, out in tests.items():\n",
    "    assert captcha_next(in_) == out\n",
    "\n",
    "print(\"Part 1:\", captcha_next(inputvalue))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Part 2: 1166\n"
     ]
    }
   ],
   "source": [
    "def captcha_halfway(inputvalue):\n",
    "    halfway = len(inputvalue) // 2\n",
    "    same_as_halfway = (\n",
    "        digit\n",
    "        for digit, other in zip(inputvalue, inputvalue[halfway:] + inputvalue[:halfway])\n",
    "        if digit == other\n",
    "    )\n",
    "    return sum(map(int, same_as_halfway))\n",
    "\n",
    "\n",
    "tests = {\n",
    "    \"1212\": 6,\n",
    "    \"1221\": 0,\n",
    "    \"123425\": 4,\n",
    "    \"123123\": 12,\n",
    "    \"12131415\": 4,\n",
    "}\n",
    "for in_, out in tests.items():\n",
    "    assert captcha_halfway(in_) == out\n",
    "\n",
    "print(\"Part 2:\", captcha_halfway(inputvalue))"
   ]
  }
 ],
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