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Educational Codeforces Round 87 | WORIA

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https://www.woria.xyz/2021/11/02/ecr87/

https://codeforces.com/contest/1354 C2. Not So Simple Polygon Embedding 题意:一个正 2n 变形,求它的最小外接正方形边长,n为奇数。 正弦定理 asin⁡A=bsin⁡B=csin⁡C=2r=d\frac{a}{\sin A}=\frac{b}{\sin B}=\frac{c}{\sin C}=2r=d sinAa​=sin