Write a program which reads two integers a, b and an operator op, and then prints the value of a op b.  The operator op is '+', '-', '*' or '/' (sum, difference, product or quotient). The division should truncate any fractional part.
while True:
	a, op, b = input().split()
	a = int(a)
	b = int(b)
	if op == "+": print(a + b)
	elif op == "-": print(a - b)
	elif op == "*": print(a * b)
	elif op == "/": print(a / b)
	else: break
while True:
	x, op, y = input().split()
	x, y = map(int, (x, y))
	if op == '?':
		break
	print(x + y if op == '+' else x - y if op == '-' else x * y if op == '*' else int(x / y))