{
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        "question": {
            "questionId": "3369",
            "questionFrontendId": "3061",
            "boundTopicId": null,
            "title": "Calculate Trapping Rain Water",
            "titleSlug": "calculate-trapping-rain-water",
            "content": null,
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            "isPaidOnly": true,
            "difficulty": "Hard",
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            "exampleTestcases": "{\"headers\":{\"Heights\":[\"id\",\"height\"]},\"rows\":{\"Heights\":[[1,0],[2,1],[3,0],[4,2],[5,1],[6,0],[7,1],[8,3],[9,2],[10,1],[11,2],[12,1]]}}",
            "categoryTitle": "Database",
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            "hints": [],
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            "sampleTestCase": "{\"headers\":{\"Heights\":[\"id\",\"height\"]},\"rows\":{\"Heights\":[[1,0],[2,1],[3,0],[4,2],[5,1],[6,0],[7,1],[8,3],[9,2],[10,1],[11,2],[12,1]]}}",
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            "judgerAvailable": true,
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            "mysqlSchemas": [
                "Create Table if not Exists Heights(id int, height int)",
                "Truncate table Heights",
                "insert into Heights (id, height) values ('1', '0')",
                "insert into Heights (id, height) values ('2', '1')",
                "insert into Heights (id, height) values ('3', '0')",
                "insert into Heights (id, height) values ('4', '2')",
                "insert into Heights (id, height) values ('5', '1')",
                "insert into Heights (id, height) values ('6', '0')",
                "insert into Heights (id, height) values ('7', '1')",
                "insert into Heights (id, height) values ('8', '3')",
                "insert into Heights (id, height) values ('9', '2')",
                "insert into Heights (id, height) values ('10', '1')",
                "insert into Heights (id, height) values ('11', '2')",
                "insert into Heights (id, height) values ('12', '1')"
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