{
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  {
   "cell_type": "code",
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   "metadata": {},
   "outputs": [],
   "source": [
    "import re\n",
    "import numpy as np\n",
    "# pattern = re.compile(r'(\\d+)-(\\d+),(\\d+)-(\\d+)')\n",
    "numbers_pattern = re.compile(r'((?:(?<!\\d)-)?\\d+)')\n",
    "\n",
    "with open('input/5', 'r') as file:\n",
    "    lines = file.readlines()\n",
    "\n",
    "# numbers = [[int(x) for x in numbers_pattern.findall(line)] for line in lines]\n",
    "# print(numbers)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 33,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Part 1: GFTNRBZPF\n",
      "Part 2: VRQWPDSGP\n"
     ]
    }
   ],
   "source": [
    "stacks = {}\n",
    "# [J]             [F] [M]            \n",
    "# [Z] [F]     [G] [Q] [F]            \n",
    "# [G] [P]     [H] [Z] [S] [Q]        \n",
    "# [V] [W] [Z] [P] [D] [G] [P]        \n",
    "# [T] [D] [S] [Z] [N] [W] [B] [N]    \n",
    "# [D] [M] [R] [J] [J] [P] [V] [P] [J]\n",
    "# [B] [R] [C] [T] [C] [V] [C] [B] [P]\n",
    "# [N] [S] [V] [R] [T] [N] [G] [Z] [W]\n",
    "#  1   2   3   4   5   6   7   8   9 \n",
    "stacks[1] = [c for c in 'NBDTVGZJ']\n",
    "stacks[2] = [c for c in 'SRMDWPF']\n",
    "stacks[3] = [c for c in 'VCRSZ']\n",
    "stacks[4] = [c for c in 'RTJZPHG']\n",
    "stacks[5] = [c for c in 'TCJNDZQF']\n",
    "stacks[6] = [c for c in 'NVPWGSFM']\n",
    "stacks[7] = [c for c in 'GCVBPQ']\n",
    "stacks[8] = [c for c in 'ZBPN']\n",
    "stacks[9] = [c for c in 'WPJ']\n",
    "base_stacks = {k:[x for x in v] for k,v in stacks.items()}\n",
    "\n",
    "# numbers = numbers[10:]\n",
    "# print(numbers)\n",
    "for l in lines[10:]:\n",
    "    n = [int(x) for x in numbers_pattern.findall(l)]\n",
    "    num, source, dest = n\n",
    "    for i in range(0, num):\n",
    "        stacks[dest].append(stacks[source].pop())\n",
    "# print(stacks)\n",
    "print('Part 1: ' + ''.join(s[-1] for s in stacks.values()))\n",
    "\n",
    "stacks = base_stacks\n",
    "for l in lines[10:]:\n",
    "    n = [int(x) for x in numbers_pattern.findall(l)]\n",
    "    num, source, dest = n\n",
    "    stacks[dest] += stacks[source][-num:]\n",
    "    stacks[source] = stacks[source][:-num]\n",
    "# print(stacks)\n",
    "print('Part 2: ' + ''.join(s[-1] for s in stacks.values()))\n"
   ]
  }
 ],
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