{
 "cells": [
  {
   "cell_type": "code",
   "execution_count": 1,
   "metadata": {},
   "outputs": [],
   "source": [
    "def count_parenthesis(s):\n",
    "    c = 0\n",
    "    for e in s:\n",
    "        if e == '(':\n",
    "            c += 1\n",
    "        if e == ')':\n",
    "            c -= 1\n",
    "    return c\n",
    "\n",
    "def floor_position(s, f):\n",
    "    c = 0\n",
    "    i = 0\n",
    "    for e in s:\n",
    "        if e == '(':\n",
    "            c += 1\n",
    "            i += 1\n",
    "        if e == ')':\n",
    "            c -= 1\n",
    "            i += 1\n",
    "        if c == f:\n",
    "            break\n",
    "    if c != f:\n",
    "        raise Exception('Floor not reached')\n",
    "    return i"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "metadata": {},
   "outputs": [],
   "source": [
    "assert count_parenthesis('(())') == 0\n",
    "assert count_parenthesis('()()') == 0\n",
    "assert count_parenthesis('(((') == 3\n",
    "assert count_parenthesis('))(((((') == 3\n",
    "assert count_parenthesis('())') == -1\n",
    "assert count_parenthesis(')())())') == -3"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "importing Jupyter notebook from helper.ipynb\n"
     ]
    }
   ],
   "source": [
    "import import_ipynb\n",
    "import helper\n",
    "s = helper.read_file(\"2015_1.txt\")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 4,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "280"
      ]
     },
     "execution_count": 4,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "count_parenthesis(s)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 5,
   "metadata": {},
   "outputs": [],
   "source": [
    "assert floor_position(')', -1) == 1\n",
    "assert floor_position('()())', -1) == 5"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 6,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "1797"
      ]
     },
     "execution_count": 6,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "floor_position(s, -1)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": []
  }
 ],
 "metadata": {
  "kernelspec": {
   "display_name": "Python 3",
   "language": "python",
   "name": "python3"
  },
  "language_info": {
   "codemirror_mode": {
    "name": "ipython",
    "version": 3
   },
   "file_extension": ".py",
   "mimetype": "text/x-python",
   "name": "python",
   "nbconvert_exporter": "python",
   "pygments_lexer": "ipython3",
   "version": "3.9.2"
  },
  "title": "Not Quite Lisp"
 },
 "nbformat": 4,
 "nbformat_minor": 2
}