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:
a=[]
b=[]
op=[]
while True:
    x,y,z=raw_input().split()
    if(y=='?'):
        break
    a.append(int(x))
    op.append(y)
    b.append(int(z))
A=iter(a)
B=iter(b)
OP=iter(op)
for n in A:
    p=B.next()
    q=OP.next()

    if(q=='+'):
        print(n+p)
    elif(q=='*'):
        print(n*p)
    elif(q=='-'):
        print(n-p)
    elif(q=='/'):
        print(n/p)