#include <iostream>
 
struct atama_
{
    int operator ()(){ return 1; }
};
 
struct mune_
{
	char const * operator ()(int i){ return "tekitou"; }
};
 
struct robo_ {
	atama_ a;
	mune_ m;
	char const * operator ()(){ return m(a()); }
};
 
struct gattai {};
struct g_a
{
	atama_ a;
};
 
g_a operator +(gattai const &g, atama_ const &a)
{
	return {a};
}
 
robo_ operator +(g_a const &g, mune_ const &m)
{
	return {g.a, m};
}
 
int main()
{
	using namespace std;
 
	auto atama = atama_();
	auto mune = mune_();
	auto robo = gattai() + atama + mune;
	cout << robo() << endl;
}
 

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