Problem: 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

Solution (in CPP):

Solution:
#include <iostream>

using namespace std;

int main(void){
	int a, b;
	char op;

	for(;;){
		cin >> a >> op >> b;
		if(op == '?')
			break;

		cout << (op^'+' ? op^'-' ? op^'*' ? a/b : a*b : a-b : a+b) << endl;
	}

	return 0;
}