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>


int main() {
	int a, b;
	std::string op;
	while (std::cin >> a >> op >> b && op != "?") {
		int sol;
		op == "+" ? sol = a + b :
			op == "-" ? sol = a - b :
			op == "*" ? sol = a * b :
			sol = a / b;
		std::cout << sol << std::endl;
	}

	return 0;
}
