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 1:
  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)