{ "data": { "question": { "questionId": "2399", "questionFrontendId": "2313", "categoryTitle": "Algorithms", "boundTopicId": 1618963, "title": "Minimum Flips in Binary Tree to Get Result", "titleSlug": "minimum-flips-in-binary-tree-to-get-result", "content": null, "translatedTitle": "二叉树中得到结果所需的最少翻转次数", "translatedContent": null, "isPaidOnly": true, "difficulty": "Hard", "likes": 8, "dislikes": 0, "isLiked": null, "similarQuestions": "[]", "contributors": [], "langToValidPlayground": null, "topicTags": [ { "name": "Tree", "slug": "tree", "translatedName": "树", "__typename": "TopicTagNode" }, { "name": "Depth-First Search", "slug": "depth-first-search", "translatedName": "深度优先搜索", "__typename": "TopicTagNode" }, { "name": "Dynamic Programming", "slug": "dynamic-programming", "translatedName": "动态规划", "__typename": "TopicTagNode" }, { "name": "Binary Tree", "slug": "binary-tree", "translatedName": "二叉树", "__typename": "TopicTagNode" } ], "companyTagStats": null, "codeSnippets": null, "stats": "{\"totalAccepted\": \"306\", \"totalSubmission\": \"432\", \"totalAcceptedRaw\": 306, \"totalSubmissionRaw\": 432, \"acRate\": \"70.8%\"}", "hints": [ "Try using tree DP to solve this problem.", "Find the minimum operations to change each subtree to true and to false separately.", "For nodes representing boolean operations, find the minimum operations by trying all combinations of values to which the child nodes can evaluate." ], "solution": null, "status": null, "sampleTestCase": "[3,5,4,2,null,1,1,1,0]\ntrue", "metaData": "{\n \"name\": \"minimumFlips\",\n \"params\": [\n {\n \"name\": \"root\",\n \"type\": \"TreeNode\"\n },\n {\n \"type\": \"boolean\",\n \"name\": \"result\"\n }\n ],\n \"return\": {\n \"type\": \"integer\"\n }\n}", "judgerAvailable": true, "judgeType": "large", "mysqlSchemas": [], "enableRunCode": true, "envInfo": "{\"cpp\":[\"C++\",\"

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