#include <iostream>

namespace shortNames
{
	int sum(int a, int b) { return a + b; }
}

namespace longNames
{
	int sum(const int numberA, const int numberB, const int numberC, const int numberD, const int numberE, const int numberF, const int numberG, const int numberH, const int numberI)
	{
		return numberA + numberB + numberC + numberD + numberE + numberF + numberG + numberH + numberI;
	}
}

int main()
{
	std::cout << shortNames::sum(4, 5) << std::endl;
	std::cout << longNames::sum(1, 2, 3, 4, 5, 6, 7, 8, 9) << std::endl;
}