[
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        "max_u": 1000,
        "min_v": 0,
        "max_v": 1000,
        "case_type": "easy"
    },
    {
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        "min_v": 0,
        "max_v": 0,
        "case_type": "edge_case"
    },
    {
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        "max_u": 1000000,
        "min_v": 0,
        "max_v": 1000000,
        "case_type": "medium"
    },
    {
        "min_u": 0,
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        "min_v": 0,
        "max_v": 1000000000000000000,
        "case_type": "random"
    }
]