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 <stdio.h>
int main(){
	int x, y, z;
	char s;
	while(1){
	scanf("%d %c %d", &x, &s, &y);
	switch(s){
		case '?': return 0;
		case '+': z = x+y; break;
		case '-': z = x-y; break;
		case '*': z = x*y; break;
		case '/': z = x/y;
	}
	printf("%d\n", z);
	}
	return 0;
}