[
    {
        "difficulty": "easy",
        "timeout": 30,
        "language": "zh"
    },
    {
        "difficulty": "medium",
        "timeout": 30,
        "language": "zh"
    },
    {
        "difficulty": "hard",
        "timeout": 30,
        "language": "zh"
    },
    {
        "difficulty": "easy",
        "timeout": 30,
        "language": "en"
    },
    {
        "difficulty": "medium",
        "timeout": 30,
        "language": "en"
    },
    {
        "difficulty": "hard",
        "timeout": 30,
        "language": "en"
    }
]