{
 "cells": [
  {
   "cell_type": "code",
   "execution_count": 21,
   "id": "falling-shipping",
   "metadata": {},
   "outputs": [],
   "source": [
    "import hashlib\n",
    "\n",
    "def mine(key, zeros=5):\n",
    "    key = key.encode()\n",
    "    n = 0\n",
    "    z = '0' * zeros\n",
    "    while True:\n",
    "        n += 1\n",
    "        nb = str(n).encode()\n",
    "        hex = hashlib.md5(key + nb).hexdigest()\n",
    "        if hex.startswith(z):\n",
    "            return n"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 22,
   "id": "immediate-movement",
   "metadata": {},
   "outputs": [],
   "source": [
    "assert mine('abcdef', 5) == 609043\n",
    "assert mine('pqrstuv', 5) == 1048970"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 23,
   "id": "respective-eagle",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "282749"
      ]
     },
     "execution_count": 23,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "mine('yzbqklnj', 5)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 24,
   "id": "hourly-hostel",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "9962624"
      ]
     },
     "execution_count": 24,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "mine('yzbqklnj', 6)"
   ]
  }
 ],
 "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": "The Ideal Stocking Stuffer"
 },
 "nbformat": 4,
 "nbformat_minor": 5
}