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
#include<iostream>
#include<stdio.h>
int main()
{
int a,b,w;
char op;
w=0;
while(1){
scanf("%d",&a);scanf("%s",&op);scanf("%d",&b);
if(op=='+')w=a+b;
else if(op=='-')w=a-b;
else if(op=='*')w=a*b;
else if(op=='/')w=a/b;
else if(op=='?')break;
printf("%d\n",w);
}
return 0;
}