"content":"<p>There are <code>k</code> workers who want to move <code>n</code> boxes from an old warehouse to a new one. You are given the two integers <code>n</code> and <code>k</code>, and a 2D integer array <code>time</code> of size <code>k x 4</code> where <code>time[i] = [leftToRight<sub>i</sub>, pickOld<sub>i</sub>, rightToLeft<sub>i</sub>, putNew<sub>i</sub>]</code>.</p>\n\n<p>The warehouses are separated by a river and connected by a bridge. The old warehouse is on the right bank of the river, and the new warehouse is on the left bank of the river. Initially, all <code>k</code> workers are waiting on the left side of the bridge. To move the boxes, the <code>i<sup>th</sup></code> worker (<strong>0-indexed</strong>) can :</p>\n\n<ul>\n\t<li>Cross the bridge from the left bank (new warehouse) to the right bank (old warehouse) in <code>leftToRight<sub>i</sub></code> minutes.</li>\n\t<li>Pick a box from the old warehouse and return to the bridge in <code>pickOld<sub>i</sub></code> minutes. Different workers can pick up their boxes simultaneously.</li>\n\t<li>Cross the bridge from the right bank (old warehouse) to the left bank (new warehouse) in <code>rightToLeft<sub>i</sub></code> minutes.</li>\n\t<li>Put the box in the new warehouse and return to the bridge in <code>putNew<sub>i</sub></code> minutes. Different workers can put their boxes simultaneously.</li>\n</ul>\n\n<p>A worker <code>i</code> is <strong>less efficient</strong> than a worker <code>j</code> if either condition is met:</p>\n\n<ul>\n\t<li><code>leftToRight<sub>i</sub> + rightToLeft<sub>i</sub> > leftToRight<sub>j</sub> + rightToLeft<sub>j</sub></code></li>\n\t<li><code>leftToRight<sub>i</sub> + rightToLeft<sub>i</sub> == leftToRight<sub>j</sub> + rightToLeft<sub>j</sub></code> and <code>i > j</code></li>\n</ul>\n\n<p>The following rules regulate the movement of the workers through the bridge :</p>\n\n<ul>\n\t<li>If a worker <code>x</code> reaches the bridge while another worker <code>y</code> is crossing the bridge, <code>x</code> waits at their side of the bridge.</li>\n\t<li>If the bridge is free, the worker waiting on the right side of the bridge gets to cross the bridge. If more than one worker is waiting on the right side, the one with <strong>the lowest efficiency</strong> crosses first.</li>\n\t<li>If the bridge is free and no worker is waiting on the right side, and at least one box remains at the old warehouse, the worker on the left side of the river gets to cross the bridge. If more than one worker is waiting on the left side, the one with <strong>the lowest efficiency</strong> crosses first.</li>\n</ul>\n\n<p>Return <em>the instance of time at which the last worker <strong>reaches the left bank</strong> of the river after all n boxes have been put in the new warehouse</em>.</p>\n\n<p> </p>\n<p><strong class=\"example\">Example 1:</strong></p>\n\n<pre>\n<strong>Input:</strong> n = 1, k = 3, time = [[1,1,2,1],[1,1,3,1],[1,1,4,1]]\n<strong>Output:</strong> 6\n<strong>Explanation: </strong>\nFrom 0 to 1: worker 2 crosses the bridge from the left bank to the right bank.\nFrom 1 to 2: worker 2 picks up a box from the old warehouse.\nFrom 2 to 6: worker 2 crosses the bridge from the right bank to the left bank.\nFrom 6 to 7: worker 2 puts a box at the new warehouse.\nThe whole process ends after 7 minutes. We return 6 because the problem asks for the instance of time at which the last worker reaches the left bank.\n</pre>\n\n<p><strong class=\"example\">Example2:</strong></p>\n\n<pre>\n<strong>Input:</strong>n=3,k=2,time=[[1,9,1,8],[10,10,10,10]]\n<strong>Output:</strong>50\n<strong>Explanation:</strong>\nFrom0 to10:worker1crossesthebridgefromtheleftbanktotherightbank.\nFrom10to20:worker1picksupaboxfromtheoldwarehouse.\nFrom10to11:worker0crossesthebridgefromtheleftbanktotherightbank.\nFrom11to20:worker0picksupaboxfromtheoldwarehouse.\nFrom20to30:worker1crossesthebridgefromtherightbanktotheleftbank.\nFrom30to40:worker1putsabo
"similarQuestions":"[{\"title\": \"The Latest Time to Catch a Bus\", \"titleSlug\": \"the-latest-time-to-catch-a-bus\", \"difficulty\": \"Medium\", \"translatedTitle\": null}, {\"title\": \"Total Cost to Hire K Workers\", \"titleSlug\": \"total-cost-to-hire-k-workers\", \"difficulty\": \"Medium\", \"translatedTitle\": null}]",
"envInfo":"{\"cpp\": [\"C++\", \"<p>Compiled with <code> clang 11 </code> using the latest C++ 20 standard.</p>\\r\\n\\r\\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\\\"https://github.com/google/sanitizers/wiki/AddressSanitizer\\\" target=\\\"_blank\\\">AddressSanitizer</a> is also enabled to help detect out-of-bounds and use-after-free bugs.</p>\\r\\n\\r\\n<p>Most standard library headers are already included automatically for your convenience.</p>\"], \"java\": [\"Java\", \"<p><code>OpenJDK 17</code>. Java 8 features such as lambda expressions and stream API can be used. </p>\\r\\n\\r\\n<p>Most standard library headers are already included automatically for your convenience.</p>\\r\\n<p>Includes <code>Pair</code> class from https://docs.oracle.com/javase/8/javafx/api/javafx/util/Pair.html.</p>\"], \"python\": [\"Python\", \"<p><code>Python 2.7.12</code>.</p>\\r\\n\\r\\n<p>Most libraries are already imported automatically for your convenience, such as <a href=\\\"https://docs.python.org/2/library/array.html\\\" target=\\\"_blank\\\">array</a>, <a href=\\\"https://docs.python.org/2/library/bisect.html\\\" target=\\\"_blank\\\">bisect</a>, <a href=\\\"https://docs.python.org/2/library/collections.html\\\" target=\\\"_blank\\\">collections</a>. If you need more libraries, you can import it yourself.</p>\\r\\n\\r\\n<p>For Map/TreeMap data structure, you may use <a href=\\\"http://www.grantjenks.com/docs/sortedcontainers/\\\" target=\\\"_blank\\\">sortedcontainers</a> library.</p>\\r\\n\\r\\n<p>Note that Python 2.7 <a href=\\\"https://www.python.org/dev/peps/pep-0373/\\\" target=\\\"_blank\\\">will not be maintained past 2020</a>. For the latest Python, please choose Python3 instead.</p>\"], \"c\": [\"C\", \"<p>Compiled with <code>gcc 8.2</code> using the gnu11 standard.</p>\\r\\n\\r\\n<p>Your code is compiled with level one optimization (<code>-O1</code>). <a href=\\\"https://github.com/google/sanitizers/wiki/AddressSanitizer\\\" target=\\\"_blank\\\">AddressSanitizer</a> is also enabled to help detect out-of-bounds and use-after-free bugs.</p>\\r\\n\\r\\n<p>Most standard library headers are already included automatically for your convenience.</p>\\r\\n\\r\\n<p>For hash table operations, you may use <a href=\\\"https://troydhanson.github.io/uthash/\\\" target=\\\"_blank\\\">uthash</a>. \\\"uthash.h\\\" is included by default. Below are some examples:</p>\\r\\n\\r\\n<p><b>1. Adding an item to a hash.</b>\\r\\n<pre>\\r\\nstruct hash_entry {\\r\\n int id; /* we'll use this field as the key */\\r\\n char name[10];\\r\\n UT_hash_handle hh; /* makes this structure hashable */\\r\\n};\\r\\n\\r\\nstruct hash_entry *users = NULL;\\r\\n\\r\\nvoid add_user(struct hash_entry *s) {\\r\\n HASH_ADD_INT(users, id, s);\\r\\n}\\r\\n</pre>\\r\\n</p>\\r\\n\\r\\n<p><b>2. Looking up an item in a hash:</b>\\r\\n<pre>\\r\\nstruct hash_entry *find_user(int user_id) {\\r\\n struct hash_entry *s;\\r\\n HASH_FIND_INT(users, &user_id, s);\\r\\n return s;\\r\\n}\\r\\n</pre>\\r\\n</p>\\r\\n\\r\\n<p><b>3. Deleting an item in a hash:</b>\\r\\n<pre>\\r\\nvoid delete_user(struct hash_entry *user) {\\r\\n HASH_DEL(users, user); \\r\\n}\\r\\n</pre>\\r\\n</p>\"], \"csharp\": [\"C#\", \"<p><a href=\\\"https://learn.microsoft.com/en-us/dotnet/csharp/whats-new/csharp-10\\\" target=\\\"_blank\\\">C# 10 with .NET 6 runtime</a></p>\"], \"javascript\": [\"JavaScript\", \"<p><code>Node.js 16.13.2</code>.</p>\\r\\n\\r\\n<p>Your code is run with <code>--harmony</code> flag, enabling <a href=\\\"http://node.green/\\\" target=\\\"_blank\\\">new ES6 features</a>.</p>\\r\\n\\r\\n<p><a href=\\\"https://lodash.com\\\" target=\\\"_blank\\\">lodash.js</a> library is included by default.</p>\\r\\n\\r\\n<p>For Priority Queue / Queue data structures, you may use 5.3.0 version of <a href=\\\"https://github.com/datastructures-js/priority-queue/tree/fb4fdb984834421279aeb081df7af624d17c2a03\\\" target=\\\"_blank\\\">datastructures-js/priority-queue</a> and 4.2.1 version of <a href=\\\"https://githu
