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:
def add(x,y):
    return x + y
def sub(x,y):
    return x - y
def mul(x,y):
    return x * y
def mod(x,y):
    return x / y



x = []
a = []
while True:
    x = raw_input().split()
    if x[1]=='?':
        break
    if x[1]=='+':
        y = add(int(x[0]),int(x[2]))
    if x[1]=='-':
        y = sub(int(x[0]),int(x[2]))
    if x[1]=='*':
        y = mul(int(x[0]),int(x[2]))
    if x[1]=='/':
        y = mod(int(x[0]),int(x[2]))
    a.append(y)

    
for j in range(len(a)):
    print a[j]