{ "data": { "question": { "questionId": "1000437", "questionFrontendId": "LCP 54", "categoryTitle": "Algorithms", "boundTopicId": 1425673, "title": "夺回据点", "titleSlug": "s5kipK", "content": "English description is not available for the problem. Please switch to Chinese.", "translatedTitle": "夺回据点", "translatedContent": "欢迎各位勇者来到力扣城,本次试炼主题为「夺回据点」。\n\n魔物了占领若干据点,这些据点被若干条道路相连接,`roads[i] = [x, y]` 表示编号 `x`、`y` 的两个据点通过一条道路连接。\n\n现在勇者要将按照以下原则将这些据点逐一夺回:\n\n- 在开始的时候,勇者可以花费资源先夺回一些据点,初始夺回第 `j` 个据点所需消耗的资源数量为 `cost[j]` \n\n- 接下来,勇者在不消耗资源情况下,每次可以夺回**一个**和「已夺回据点」相连接的魔物据点,并对其进行夺回\n\n> 注:为了防止魔物暴动,勇者在每一次夺回据点后(包括花费资源夺回据点后),需要保证剩余的所有魔物据点之间是相连通的(不经过「已夺回据点」)。\n\n请返回勇者夺回所有据点需要消耗的最少资源数量。\n\n**注意:**\n- 输入保证初始所有据点都是连通的,且不存在重边和自环\n\n**示例 1:**\n>输入:\n>`cost = [1,2,3,4,5,6]`\n>`roads = [[0,1],[0,2],[1,3],[2,3],[1,2],[2,4],[2,5]]`\n>\n>输出:`6`\n>\n>解释:\n>勇者消耗资源 `6` 夺回据点 `0` 和 `4`,魔物据点 `1、2、3、5` 相连通;\n>第一次夺回据点 `1`,魔物据点 `2、3、5` 相连通;\n>第二次夺回据点 `3`,魔物据点 `2、5` 相连通;\n>第三次夺回据点 `2`,剩余魔物据点 `5`;\n>第四次夺回据点 `5`,无剩余魔物据点;\n>因此最少需要消耗资源为 `6`,可占领所有据点。\n![image.png](https://pic.leetcode-cn.com/1648706944-KJstUN-image.png){:height=170px}\n\n\n**示例 2:**\n>输入:\n>`cost = [3,2,1,4]`\n>`roads = [[0,2],[2,3],[3,1]]`\n>\n>输出:`2`\n>\n>解释:\n>勇者消耗资源 `2` 夺回据点 `1`,魔物据点 `0、2、3` 相连通;\n>第一次夺回据点 `3`,魔物据点 `2、0` 相连通;\n>第二次夺回据点 `2`,剩余魔物据点 `0`;\n>第三次夺回据点 `0`,无剩余魔物据点;\n>因此最少需要消耗资源为 `2`,可占领所有据点。\n![image.png](https://pic.leetcode-cn.com/1648707186-LJRwzU-image.png){:height=60px}\n\n\n**提示:**\n- `1 <= roads.length, cost.length <= 10^5`\n- `0 <= roads[i][0], roads[i][1] < cost.length`\n- `1 <= cost[i] <= 10^9`\n", "isPaidOnly": false, "difficulty": "Hard", "likes": 11, "dislikes": 0, "isLiked": null, "similarQuestions": "[]", "contributors": [ { "username": "LeetCode", "profileUrl": "/u/leetcode", "avatarUrl": "https://assets.leetcode.cn/aliyun-lc-upload/uploaded_files/2021/03/73c9f099-abbe-4d94-853f-f8abffd459cd/leetcode.png", "__typename": "ContributorNode" } ], "langToValidPlayground": "{\"cpp\": false, \"java\": false, \"python\": false, \"python3\": false, \"mysql\": false, \"mssql\": false, \"oraclesql\": false, \"c\": false, \"csharp\": false, \"javascript\": false, \"typescript\": false, \"bash\": false, \"php\": false, \"swift\": false, \"kotlin\": false, 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"langSlug": "python", "code": "class Solution(object):\n def minimumCost(self, cost, roads):\n \"\"\"\n :type cost: List[int]\n :type roads: List[List[int]]\n :rtype: int\n \"\"\"", "__typename": "CodeSnippetNode" }, { "lang": "Python3", "langSlug": "python3", "code": "class Solution:\n def minimumCost(self, cost: List[int], roads: List[List[int]]) -> int:", "__typename": "CodeSnippetNode" }, { "lang": "C", "langSlug": "c", "code": "\n\nlong long minimumCost(int* cost, int costSize, int** roads, int roadsSize, int* roadsColSize){\n\n}", "__typename": "CodeSnippetNode" }, { "lang": "C#", "langSlug": "csharp", "code": "public class Solution {\n public long MinimumCost(int[] cost, int[][] roads) {\n\n }\n}", "__typename": "CodeSnippetNode" }, { "lang": "JavaScript", "langSlug": "javascript", "code": "/**\n * @param {number[]} cost\n * @param {number[][]} roads\n * @return {number}\n */\nvar minimumCost = function(cost, roads) {\n\n};", "__typename": "CodeSnippetNode" }, { "lang": 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