#include <iostream>
#include <cstdint>
template<class INT=short>
constexpr INT Tarai(const INT& X,const INT& Y,const INT& Z){
	if (X <= Y)		return Y;
 
	return Tarai<INT>(Tarai<INT>(X - 1, Y, Z), Tarai<INT>(Y - 1, Z, X), Tarai<INT>(Z - 1, X, Y));
 
}
 
int main(){
 
	constexpr 
		std::int64_t X = 25;
	constexpr
		std::int64_t Y = 6;
	constexpr
		std::int64_t Z = 0;
 
	constexpr 
		std::int64_t R = Tarai<std::int16_t>(X, Y, Z);
 
	std::cout << R << std::endl;
 
    return 0;
}

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