Day13.ipynb

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   "source": [
    "import ast\n",
    "\n",
    "with open(\"Day13.txt\") as file:\n",
    "    data = [ast.literal_eval(line) for line in file if line.strip()]\n",
    "group_data = [data[i:i+2] for i in range(0, len(data), 2)]"
   ]
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    "def check(left, right):\n",
    "    match left, right:\n",
    "        case int(), int():\n",
    "            return left - right\n",
    "        case list(), int():\n",
    "            right = [right]\n",
    "        case int(), list():\n",
    "            left = [left]\n",
    "    if not left or not right:\n",
    "        return len(left) - len(right)\n",
    "    if result := check(left[0], right[0]):\n",
    "        return result\n",
    "    return check(left[1:], right[1:])"
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   "source": [
    "sum(i for i, (a, b) in enumerate(group_data, start=1) if check(a, b) <= 0)"
   ]
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       "19305"
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     "execution_count": 4,
     "metadata": {},
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   "source": [
    "from functools import cmp_to_key\n",
    "\n",
    "new_data = data[:]\n",
    "new_data.extend([[[2]], [[6]]])\n",
    "new_data.sort(key=cmp_to_key(check))\n",
    "(new_data.index([[2]]) + 1) * (new_data.index([[6]]) + 1)"
   ]
  }
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