{
 "metadata": {
  "name": "",
  "signature": "sha256:c9e8d3ae711b549af44eebce872633beb2aff4aed47d8dc35b3e3a6c168195ed"
 },
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 "nbformat_minor": 0,
 "worksheets": [
  {
   "cells": [
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "import time\n",
      "start = time.time()\n",
      "\n",
      "palindromes = [x*y for x in xrange(100,1000)\n",
      "                   for y in xrange(x,1000)\n",
      "                   if str(x*y)[::-1]==str(x*y)]\n",
      "\n",
      "print \"Answer:{}\".format( max(palindromes) )\n",
      "print \"Elapsed time:{0} seconds\".format(time.time()-start)"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "Answer:906609\n",
        "Elapsed time:0.334797143936 seconds\n"
       ]
      }
     ],
     "prompt_number": 1
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [],
     "language": "python",
     "metadata": {},
     "outputs": [],
     "prompt_number": 1
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [],
     "language": "python",
     "metadata": {},
     "outputs": [],
     "prompt_number": 1
    }
   ],
   "metadata": {}
  }
 ]
}