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()
  a=int(a)
  b=int(b)
  if op=='?':
    break
  if op=='+':
   print(a+b)
  if op=='-':
   print(a-b)
  if op=='*':
   print(a*b)
  if op=='/':
   print(a//b)