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
l=raw_input()
k=l.split()
a=int(k[0])
op=k[1]
b=int(k[2])
#
while op<>'?':
        if op=='+':
                print a + b
        if op=='-':
                print a - b
        if op=='*':
                print a * b
        if op=='/':
                print a / b
#
        l=raw_input()
        k=l.split()
        a=int(k[0])
        op=k[1]
        b=int(k[2])