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:
a, op, b = input().split()
while op != '?':
    a, b = int(a), int(b)
    if op == '+': a += b
    if op == '-': a -= b
    if op == '*': a *= b
    if op == '/': a = int(a / b)
    print(a)
    a, op, b = input().split()