{
 "cells": [
  {
   "cell_type": "markdown",
   "id": "14be2365-970d-41a2-bc43-000c718aac46",
   "metadata": {},
   "source": [
    "### Part 1"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 26,
   "id": "47f56d42-e07f-4fdc-a3a3-0cd97c09bde9",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "1238"
      ]
     },
     "execution_count": 26,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "with open(\"aoc6_input.txt\", \"r\") as f:\n",
    "    read_str_before_packet = f.read(3)\n",
    "    while c := f.read(1):\n",
    "        read_str_before_packet += c\n",
    "        if len(set(read_str_before_packet[-4:])) == 4:\n",
    "            break\n",
    "\n",
    "len(read_str_before_packet)"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "10e8a318-7517-4212-b619-ad1406f144e3",
   "metadata": {},
   "source": [
    "#### Part 2"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 27,
   "id": "139b3b21-76a0-49d7-9533-caf170e18cb0",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "3037"
      ]
     },
     "execution_count": 27,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "with open(\"aoc6_input.txt\", \"r\") as f:\n",
    "    read_str_before_marker = f.read(13)\n",
    "    while c := f.read(1):\n",
    "        read_str_before_marker += c\n",
    "        if len(set(read_str_before_marker[-14:])) == 14:\n",
    "            break\n",
    "\n",
    "len(read_str_before_marker)"
   ]
  }
 ],
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  "language_info": {
   "codemirror_mode": {
    "name": "ipython",
    "version": 3
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   "file_extension": ".py",
   "mimetype": "text/x-python",
   "name": "python",
   "nbconvert_exporter": "python",
   "pygments_lexer": "ipython3",
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