015-lattice-paths.ipynb

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   "source": [
    "# Lattice paths\n",
    "## Problem 15 \n",
    "\n",
    "<div class=\"problem_content\" role=\"problem\">\n",
    "<p>Starting in the top left corner of a 2&#215;2 grid, and only being able to move to the right and down, there are exactly 6 routes to the bottom right corner.</p>\n",
    "<div style=\"text-align:center;\">\n",
    "<img alt=\"\" src=\"project/images/p015.gif\"/></div>\n",
    "<p>How many such routes are there through a 20&#215;20 grid?</p>\n",
    "</div>"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "def solve():\n",
    "    # Your code here\n",
    "    \n"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Solution"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "solve()"
   ]
  }
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