multiplicity a, b, c;

	a += 5;
	a += 2;
	a += 7;
	a += 1;
	a = a + 4;

	b += 0;
	b += 6;
	b += 1;
	b += 15;
	b += 76;
	b += 56;
	b = b - 56;

	std::cout << "a and b" << a << b;
	std::cout << "^: " << (a ^ b);