[
    {
        "n_range": [
            1,
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        ],
        "a_max": 1000000,
        "k_max": 100000000
    },
    {
        "n_range": [
            1,
            20
        ],
        "a_max": 100000,
        "k_max": 10000000
    },
    {
        "n_range": [
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            50
        ],
        "a_max": 500000,
        "k_max": 500000000
    },
    {
        "n_range": [
            20,
            40
        ],
        "a_max": 2000000,
        "k_max": 2000000000
    }
]