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Re:蒟蒻的AC纪念

Posted by hnkjxy03 at 2021-02-09 14:44:15 on Problem 1005
In Reply To:蒟蒻的AC纪念 Posted by:CrystalBall at 2016-10-05 15:57:29
PI*(x*x+y*y)是求这半圆还是半椭圆面积 

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