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<bits/stdc++.h>
using namespace std;

int main(){
	int a, b, X;
        string d;
	while(1){
	cin>>a>>d>>b;
        if (d =="?")break;
	if (d == "+") X = a + b;
	if (d == "-") X = a - b;
        if (d == "*") X = a * b;
	if (d == "/") X = a / b;
	cout << X << endl;
	}



	return(0);
    }
  
