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:
import sys

while True:
	a, op, b = sys.stdin.readline().split( " " )
	if "?" == op:
		break
	a, b = int( a ), int( b )
	if "+" == op:
		print( "{:d}".format( a+b ) )
	elif "-" == op:
		print( "{:d}".format( a-b ) )
	elif "*" == op:
		print( "{:d}".format( a*b ) )
	elif "/" == op:
		print( "{:d}".format( a//b ) )