{
 "cells": [
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "# Copyright 2010-2018 Google LLC\n",
    "# Licensed under the Apache License, Version 2.0 (the \"License\");\n",
    "# you may not use this file except in compliance with the License.\n",
    "# You may obtain a copy of the License at\n",
    "#\n",
    "#     http://www.apache.org/licenses/LICENSE-2.0\n",
    "#\n",
    "# Unless required by applicable law or agreed to in writing, software\n",
    "# distributed under the License is distributed on an \"AS IS\" BASIS,\n",
    "# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n",
    "# See the License for the specific language governing permissions and\n",
    "# limitations under the License.\n",
    "# [START program]\n",
    "\"\"\"A simple knapsack problem.\"\"\"\n",
    "# [START import]\n",
    "from __future__ import print_function\n",
    "from ortools.algorithms import pywrapknapsack_solver\n",
    "# [END import]\n",
    "\n",
    "\n",
    "# Create the solver.\n",
    "# [START solver]\n",
    "solver = pywrapknapsack_solver.KnapsackSolver(\n",
    "    pywrapknapsack_solver.KnapsackSolver.\n",
    "    KNAPSACK_DYNAMIC_PROGRAMMING_SOLVER, \"test\")\n",
    "# [END solver]\n",
    "\n",
    "# [START data]\n",
    "weights = [[\n",
    "    565, 406, 194, 130, 435, 367, 230, 315, 393, 125, 670, 892, 600, 293,\n",
    "    712, 147, 421, 255\n",
    "]]\n",
    "capacities = [850]\n",
    "values = weights[0]\n",
    "# [END data]\n",
    "\n",
    "# [START solve]\n",
    "solver.Init(values, weights, capacities)\n",
    "computed_value = solver.Solve()\n",
    "# [END solve]\n",
    "\n",
    "# [START print_solution]\n",
    "packed_items = [\n",
    "    x for x in range(0, len(weights[0])) if solver.BestSolutionContains(x)\n",
    "]\n",
    "packed_weights = [weights[0][i] for i in packed_items]\n",
    "\n",
    "print(\"Packed items: \", packed_items)\n",
    "print(\"Packed weights: \", packed_weights)\n",
    "print(\"Total weight (same as total value): \", computed_value)\n",
    "# [END print_solution]\n",
    "\n"
   ]
  }
 ],
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