{ "data": { "question": { "questionId": "1100", "questionFrontendId": "1135", "boundTopicId": null, "title": "Connecting Cities With Minimum Cost", "titleSlug": "connecting-cities-with-minimum-cost", "content": null, "translatedTitle": null, "translatedContent": null, "isPaidOnly": true, "difficulty": "Medium", "likes": 875, "dislikes": 47, "isLiked": null, "similarQuestions": "[{\"title\": \"Minimum Cost to Reach City With Discounts\", \"titleSlug\": \"minimum-cost-to-reach-city-with-discounts\", \"difficulty\": \"Medium\", \"translatedTitle\": null}]", "exampleTestcases": "3\n[[1,2,5],[1,3,6],[2,3,1]]\n4\n[[1,2,3],[3,4,4]]", "categoryTitle": "Algorithms", "contributors": [], "topicTags": [ { "name": "Union Find", "slug": "union-find", "translatedName": null, "__typename": "TopicTagNode" }, { "name": "Graph", "slug": "graph", "translatedName": null, "__typename": "TopicTagNode" }, { "name": "Heap (Priority Queue)", "slug": "heap-priority-queue", "translatedName": null, "__typename": "TopicTagNode" }, { "name": "Minimum Spanning Tree", "slug": "minimum-spanning-tree", "translatedName": null, "__typename": "TopicTagNode" } ], "companyTagStats": null, "codeSnippets": null, "stats": "{\"totalAccepted\": \"54.6K\", \"totalSubmission\": \"89.9K\", \"totalAcceptedRaw\": 54598, \"totalSubmissionRaw\": 89853, \"acRate\": \"60.8%\"}", "hints": [ "What if we model the cities as a graph?", "Build a graph of cities and find the minimum spanning tree.", "You can use a variation of the Kruskal's algorithm for that.", "Sort the edges by their cost and use a union-find data structure.", "How to check all cities are connected?", "At the beginning we have n connected components, each time we connect two components the number of connected components is reduced by one. At the end we should end with only a single component otherwise return -1." ], "solution": { "id": "1091", "canSeeDetail": false, "paidOnly": true, "hasVideoSolution": false, "paidOnlyVideo": true, "__typename": "ArticleNode" }, "status": null, "sampleTestCase": "3\n[[1,2,5],[1,3,6],[2,3,1]]", "metaData": "{\n \"name\": \"minimumCost\",\n \"params\": [\n {\n \"name\": \"n\",\n \"type\": \"integer\"\n },\n {\n \"name\": \"connections\",\n \"type\": \"integer[][]\"\n }\n ],\n \"return\": {\n \"type\": \"integer\"\n }\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.

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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.

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

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Python 2.7.12.

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Compiled with gcc 8.2 using the gnu99 standard.

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C# 10 with .NET 6 runtime

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Node.js 16.13.2.

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Ruby 3.1

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Swift 5.5.2.

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Go 1.17.6.

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Python 3.10.

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Scala 2.13.7.

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Kotlin 1.3.10.

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Rust 1.58.1

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PHP 8.1.

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With bcmath module

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TypeScript 4.5.4, Node.js 16.13.2.

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Run with Racket 8.3.

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