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
while(1):
    x = raw_input()
    x = x.split(" ")
    a = int(x[0])
    op = str(x[1])
    b = int(x[2])
    if(op == "?"):
        break
    elif(op == "+"):
        print a+b
    elif(op == "-"):
        print a-b
    elif(op == "*"):
        print a*b
    elif(op == "/"):
        print a/b

