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,c,k;
	string b;
	while(cin >> a >> b >> c){
		if(b == "?") break;
		if(b == "+") k = a + c;
		if(b == "-") k = a - c;
		if(b == "*") k = a * c;
		if(b == "/") k = a / c;
		cout << k << endl;
	}

return 0;
}