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0_0_37802459_19473.cpp: In function 'Convex get_convexhull(std::vector<point<double> >)':
0_0_37802459_19473.cpp:354:15: error: could not convert '{st}' from '<brace-enclosed initializer list>' to 'Convex {aka convex<double>}'
     return {st};
               ^