Problem: 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.

Constraints

* 0 ≤ a, b ≤ 20000
* No divisions by zero are given.

Input

The input consists of multiple datasets. Each dataset is given in the following format.


a op b


The input ends with a dataset where op = '?'. Your program should not process for this dataset.

Output

For each dataset, print the value in a line.

Example

Input

1 + 2
56 - 18
13 * 2
100 / 10
27 + 81
0 ? 0


Output

3
38
26
10
108

Solution (in PYTHON):

Solution:
#coding: UTF-8

while True:

	l = raw_input().split()

	a = int(l[0])
	b = int(l[2])

	op =l[1]



	if op == "+":
		x = a + b
		print x

	if op == "-":
		x = a - b
		print x

	if op == "*":
		x = a * b
		print x

	if op == "/":
		x = a / b
		print "%d" %x


	if op == "?":
		break