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[组合] 一个含绝对值的计数问题

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zuobulai Posted 2017-4-14 10:26 |Read mode

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求思路，不用枚举法！

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色k Posted 2017-4-14 14:20

枚举不是挺好的么，才24种情况，很快数完了，除非你还想搞推广研究

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Infinity Posted 2017-4-18 14:16

分5种情况讨论就行（6分解为1~3内不超过4个数的和），无需枚举，结果是9种。

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