[
    {
        "max_n": 10,
        "max_x": 1000
    },
    {
        "max_n": 20,
        "max_x": 10000
    },
    {
        "max_n": 10,
        "max_x": 500
    },
    {
        "max_n": 5,
        "max_x": 10000
    }
]