class point:
	def __init__(self, x, y):
		self.x = x
		self.y = y
	def __add__(self, p):
		return point(self.x + p.x, self.y + p.y)
	def __mul__(self, p):
		return self.x * p.x + self.y * p.y;

p = point(3, 4)
q = point(8, -7)
s = p + q
print s.x, s.y