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
#!/usr/bin/python

import sys
while 1:
  equation = raw_input().split(" ")

  a = int(equation[0])
  b = int(equation[2])
  mark = equation[1]

  if mark == "?":
      sys.exit()
  elif mark == "+":
      print str(a+b)
  elif mark == "-":
      print str(a-b)
  elif mark == "*":
      print str(a*b)
  elif mark == "/":
      print str(a/b)