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 PYTHON):

Solution:
r = 0
while r == 0:
        i = map(str,raw_input().split())
        i[0] = int(i[0])
        i[2] = int(i[2])
        if i[1] == "+":
                print i[0]+i[2]
        elif i[1] == "-":
                print i[0]-i[2]
        elif i[1] == "*":
                print i[0]*i[2]
        elif i[1] == "/":
                print i[0]/i[2]
        elif i[1] == "?":
                break
        else:
                print "error"