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:
import sys
for line in sys.stdin:
    a,b,c = line.split()
    a,c = int(a), int(c)
    p = '+-*/?'.index(b)
    if p == 0: a += c
    elif p == 1: a -= c
    elif p == 2: a *= c 
    elif p == 3: a /= c
    elif p == 4: break
    print a