Python Jupyter Day 2

Python/day2/solution.ipynb

@@ -0,0 +1,104 @@
+{
+ "metadata": {
+  "language_info": {
+   "codemirror_mode": {
+    "name": "ipython",
+    "version": 3
+   },
+   "file_extension": ".py",
+   "mimetype": "text/x-python",
+   "name": "python",
+   "nbconvert_exporter": "python",
+   "pygments_lexer": "ipython3",
+   "version": "3.8.6-final"
+  },
+  "orig_nbformat": 2,
+  "kernelspec": {
+   "name": "python3",
+   "display_name": "Python 3.8.6 64-bit",
+   "metadata": {
+    "interpreter": {
+     "hash": "1ddf53fa84779e14f0db18342168679c9c165a81c5f324dac828befab228d68d"
+    }
+   }
+  }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 2,
+ "cells": [
+  {
+   "cell_type": "code",
+   "execution_count": 1,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "# Get puzzle input from input file\n",
+    "\n",
+    "puzzle_input = open(\"input\").read().split(\"\\n\")"
+   ]
+  },
+  {
+   "source": [
+    "# Part 1 #"
+   ],
+   "cell_type": "markdown",
+   "metadata": {}
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 2,
+   "metadata": {},
+   "outputs": [
+    {
+     "output_type": "stream",
+     "name": "stdout",
+     "text": [
+      "1606483\n"
+     ]
+    }
+   ],
+   "source": [
+    "wrapping_paper = 0\n",
+    "for packet in puzzle_input:\n",
+    "    l, w, h = map(lambda val: int(val), packet.split(\"x\"))\n",
+    "    # the surface area of the box, which is 2*l*w + 2*w*h + 2*h*l\n",
+    "    sides = [l*w*2, w*h*2, l*h*2]\n",
+    "    # extra paper for each present: the area of the smallest side.\n",
+    "    wrapping_paper += sum(sides) + int(min(sides)/2)\n",
+    "print(wrapping_paper)"
+   ]
+  },
+  {
+   "source": [
+    "# Part 2 #"
+   ],
+   "cell_type": "markdown",
+   "metadata": {}
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 3,
+   "metadata": {},
+   "outputs": [
+    {
+     "output_type": "stream",
+     "name": "stdout",
+     "text": [
+      "3842356\n"
+     ]
+    }
+   ],
+   "source": [
+    "ribbon = 0\n",
+    "for packet in puzzle_input:\n",
+    "    l, w, h = map(lambda val: int(val), packet.split(\"x\"))\n",
+    "    # the feet of ribbon required for the perfect bow is equal to the cubic feet of volume of the present\n",
+    "    ribbon += l*w*h\n",
+    "    # The ribbon required to wrap a present is the shortest distance around its sides, or the smallest perimeter of any one face\n",
+    "    x, y = sorted([l, w, h])[0:2]\n",
+    "    ribbon += 2*x + 2*y\n",
+    "print(ribbon)"
+   ]
+  }
+ ]
+}