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: Accepted)

while True:
  a, op, b = list(input().split())
  a = int(a)
  b = int(b)

  if op == "+":
    ans = a + b
  elif op == "-":
    ans = a - b
  elif op ==  "*":
    ans = a * b
  elif op ==  "/":
    ans = a // b
  elif op == "?":
    break

  print(ans)