三點求圓心以及半徑

三點求圓心以及半徑模板web double X,Y,R; struct Point{ double x,y; }pp[maxn]; double dis(Point x,Point y) { return sqrt((x.x-y.x)*(x.x-y.x)+(x.y-y.y)*(x.y-y.y)); } void solve(Point a,Point b,Point c)//三點

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