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 = input().split()   # 3変数ともに文字列として読み込む
    A =int(A)                   # a を整数に変換
    B = int(B)                   # b を整数に変換


    if op=="?": # opが"?"の時は終了
        break
    else:    #opが"?"以外の時
        if op=="+":
            print(A + B)
        elif op=="-":
            print(A - B)
        elif op=="*":
            print(A * B)
        elif op=="/":
            print(A // B)
        # ここ処理を書いてください
        # else のなかです。この通りのインデントを付けてください。