Problem:
Simple Calculator

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.

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.

Constraints

0 ≤ a, b ≤ 20000

No divisions by zero are given.

Sample Input 1

1 + 2
56 - 18
13 * 2
100 / 10
27 + 81
0 ? 0

Sample Output 1

3
38
26
10
108

Solution in Python3 (judge verdict: Wrong Answer)

import sys


def main():
    while True:
        list1 = [i for i in sys.stdin.readline().split()]
        if '?' in list1:
            break
        a, b, op = int(list1[0]), int(list1[2]), list1[1]
        if op == '+':
            print(a + b)
        elif op == '-':
            print(a - b)
        elif op == '*':
            print(a * b)
        else:
            print(a / b)
    return


if __name__ == '__main__':
    main()