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atan2+-asin 劃分區間,計算沿每個區間的中線的結果

Posted by lddlinan at 2020-11-10 20:48:44 on Problem 1626
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(不知道為啥,一直以為atan2是【0,2*pi),WA得好辛苦還以為是精度問題, 不知道為啥想起來man了以下,才發現[-pi,pi]....)

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