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

output = []

def main():
    lines = sys.stdin.readlines()

    for line in lines:
        # print(line)
        line = line.strip('\n')
        elems = line.split(" ")
        output_num = 0
        if elems[1] == '+':
            output_num = int(elems[0]) + int(elems[2])
        elif elems[1] == '-':
            output_num = int(elems[0]) - int(elems[2])
        elif elems[1] == '*':
            output_num = int(elems[0]) * int(elems[2])
        elif elems[1] == '/':
            output_num = int(elems[0]) / int(elems[2])
        elif elems[1] == '?':
            sys.exit()
        print(output_num)

if __name__ == "__main__":
    main()