{ "data": { "question": { "questionId": "761", "questionFrontendId": "759", "boundTopicId": null, "title": "Employee Free Time", "titleSlug": "employee-free-time", "content": null, "translatedTitle": null, "translatedContent": null, "isPaidOnly": true, "difficulty": "Hard", "likes": 1345, "dislikes": 85, "isLiked": null, "similarQuestions": "[{\"title\": \"Merge Intervals\", \"titleSlug\": \"merge-intervals\", \"difficulty\": \"Medium\", \"translatedTitle\": null}, {\"title\": \"Interval List Intersections\", \"titleSlug\": \"interval-list-intersections\", \"difficulty\": \"Medium\", \"translatedTitle\": null}]", "exampleTestcases": "[[[1,2],[5,6]],[[1,3]],[[4,10]]]\n[[[1,3],[6,7]],[[2,4]],[[2,5],[9,12]]]", "categoryTitle": "Algorithms", "contributors": [], "topicTags": [ { "name": "Array", "slug": "array", "translatedName": null, "__typename": "TopicTagNode" }, { "name": "Sorting", "slug": "sorting", "translatedName": null, "__typename": "TopicTagNode" }, { "name": "Heap (Priority Queue)", "slug": "heap-priority-queue", "translatedName": null, "__typename": "TopicTagNode" } ], "companyTagStats": null, "codeSnippets": null, "stats": "{\"totalAccepted\": \"103.7K\", \"totalSubmission\": \"146.1K\", \"totalAcceptedRaw\": 103653, \"totalSubmissionRaw\": 146115, \"acRate\": \"70.9%\"}", "hints": [ "Take all the intervals and do an \"events\" (or \"line sweep\") approach - an event of (x, OPEN) increases the number of active intervals, while (x, CLOSE) decreases it.\r\n\r\nProcessing in sorted order from left to right, if the number of active intervals is zero, then you crossed a region of common free time." ], "solution": null, "status": null, "sampleTestCase": "[[[1,2],[5,6]],[[1,3]],[[4,10]]]", "metaData": "{\n \"name\": \"employeeFreeTime\",\n \"params\": [\n {\n \"name\": \"schedule\",\n \"type\": \"integer\"\n }\n ],\n \"return\": {\n \"type\": \"integer\"\n },\n \"languages\": [\n \"cpp\",\n \"java\",\n \"python\",\n \"csharp\",\n \"javascript\",\n \"python3\",\n \"golang\",\n \"ruby\",\n \"kotlin\",\n \"scala\",\n \"swift\",\n \"php\",\n \"typescript\",\n \"rust\"\n ],\n \"manual\": true\n}", "judgerAvailable": true, "judgeType": "large", "mysqlSchemas": [], "enableRunCode": true, "enableTestMode": false, "enableDebugger": true, "envInfo": "{\"cpp\": [\"C++\", \"

Compiled with clang 11 using the latest C++ 17 standard.

\\r\\n\\r\\n

Your code is compiled with level two optimization (-O2). AddressSanitizer is also enabled to help detect out-of-bounds and use-after-free bugs.

\\r\\n\\r\\n

Most standard library headers are already included automatically for your convenience.

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OpenJDK 17 . Java 8 features such as lambda expressions and stream API can be used.

\\r\\n\\r\\n

Most standard library headers are already included automatically for your convenience.

\\r\\n

Includes Pair class from https://docs.oracle.com/javase/8/javafx/api/javafx/util/Pair.html.

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Python 2.7.12.

\\r\\n\\r\\n

Most libraries are already imported automatically for your convenience, such as array, bisect, collections. If you need more libraries, you can import it yourself.

\\r\\n\\r\\n

For Map/TreeMap data structure, you may use sortedcontainers library.

\\r\\n\\r\\n

Note that Python 2.7 will not be maintained past 2020. For the latest Python, please choose Python3 instead.

\"], \"csharp\": [\"C#\", \"

C# 10 with .NET 6 runtime

\\r\\n\\r\\n

Your code is compiled with debug flag enabled (/debug).

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Node.js 16.13.2.

\\r\\n\\r\\n

Your code is run with --harmony flag, enabling new ES6 features.

\\r\\n\\r\\n

lodash.js library is included by default.

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For Priority Queue / Queue data structures, you may use datastructures-js/priority-queue and datastructures-js/queue.

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Ruby 3.1

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Some common data structure implementations are provided in the Algorithms module: https://www.rubydoc.info/github/kanwei/algorithms/Algorithms

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Swift 5.5.2.

\"], \"golang\": [\"Go\", \"

Go 1.17.6.

\\r\\n\\r\\n

Support https://godoc.org/github.com/emirpasic/gods library.

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Python 3.10.

\\r\\n\\r\\n

Most libraries are already imported automatically for your convenience, such as array, bisect, collections. If you need more libraries, you can import it yourself.

\\r\\n\\r\\n

For Map/TreeMap data structure, you may use sortedcontainers library.

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Scala 2.13.7.

\"], \"kotlin\": [\"Kotlin\", \"

Kotlin 1.3.10.

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Rust 1.58.1

\\r\\n\\r\\n

Supports rand v0.6\\u00a0from crates.io

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PHP 8.1.

\\r\\n

With bcmath module

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TypeScript 4.5.4, Node.js 16.13.2.

\\r\\n\\r\\n

Your code is run with --harmony flag, enabling new ES2020 features.

\\r\\n\\r\\n

lodash.js library is included by default.

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