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 PYTHON3):

Solution:
while True:
	a, op, b = input().split()
	if op == "?": break
	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)