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
method = {"+": lambda a, b: a + b,
		  "-": lambda a, b: a - b,
		  "*": lambda a, b: a * b,
		  "/": lambda a, b: a / b}
		
while True:
	args = raw_input().split(" ")
	if args[1] == "?":
		break
	else:
		a = int(args[0])
		op = args[1]
		b = int(args[2])
		print method[op](a,b)
			