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>//itp14c.cpp
using namespace std;
int main(void)
{
	int a,b;
	char op;
	while(1){
		cin>>a>>op>>b;
		if(op=='?') break;
		if(op=='+') cout<<a+b<<endl;
		else if(op=='-') cout<<a-b<<endl;
		else if(op=='*') cout<<a*b<<endl;
		else cout<<a/b<<endl;
	}
	return 0;
}	
