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:
#-------------------------------------------------------------------------------
# coding: utf-8
# Created:     16/12/2015
import sys

io = sys.stdin

op = { "+" : lambda x, y:  x + y,
        "-": lambda x,y: x - y,
        "/": lambda x,y: x/y,
        "*": lambda x,y: x*y }


while True:
    a, op_, b = io.readline().split()
    if op_ == "?" : break
    a1, b1 = int(a), int(b)

    print op[op_](a1, b1)