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:
OP = {'+': lambda a,b: a+b, '-': lambda a,b: a-b, '*': lambda a,b: a*b, '/': lambda a,b: a//b}

while True:
    a, op, b = [s for s in input().split()]
    if op == '?':
        break
    print(OP[op](int(a), int(b)))