#include <iostream>
 
struct Quad
{
    Quad(const size_t side){ std::cout<< "build quad: "<<side<<"\n"; }
};
 
struct Rect
{
    Rect(const size_t w,const size_t h){ std::cout<< "build rect: "<<w<<" : "<<h<<"\n"; }
};
 
struct Factory_figures
{
    Factory_figures(){ count +=10; }
    operator Quad() { return Quad(count); }
    operator Rect() { return Rect(count,count); }
    static size_t count;
};
size_t Factory_figures::count=0;
 
template<class T>struct Figure
{
    Figure(const T& src = Factory_figures() ){}
};
 
int main()
{
    Figure<Quad> f1;
    Figure<Quad> f2;
    Figure<Quad> f3;
    Figure<Rect> f4;
    Figure<Rect> f5;
    return 0;
}

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