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:
class SimpleCalculator:
    def calc(self, a, op, b):
        if op == '+':
            print a + b
        elif op == '-':
            print a - b
        elif op == '*':
            print a * b
        elif op == '/':
            print a / b

if __name__ == "__main__":
    sc = SimpleCalculator()
    while True:
        a, op, b = map(str, raw_input().split())
        if op == "?":
            break
        sc.calc(int(a), op, int(b))