需要dp，并且x[1]是未知的，需要用方程去求x[1] @[zs8848](/user/772847) @[zs8848](/user/772847)
by Grammar__hbw @ 2024-06-25 20:31:47
感谢大佬
by zs8848 @ 2024-06-25 20:34:22
@[zs8848](/user/772847) 是HELP。。。
by 11514zbs @ 2024-06-25 20:41:52
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# _~~ _- 1.
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by Xzm0819 @ 2024-07-17 16:35:09