获取题目列表

{
    "count": 0,
    "next": "string",
    "previous": "string",
    "results": [
        {
            "id": 0,
            "solved": true,
            "tags": [
                {
                    "id": 0,
                    "name": "string"
                }
            ],
            "title": "string",
            "difficulty": 0,
            "is_hidden": true,
            "submission_count": 0,
            "accepted_count": 0
        }
    ]
}