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 <cstdio>
int main(){
	int a,b;
	char op;
	while(scanf("%d %c %d",&a,&op,&b)){
		if(op=='?')break;

		if(op=='+')printf("%d\n",a+b);
	
		if(op=='-')printf("%d\n",a-b);

		if(op=='*')printf("%d\n",a*b);
	
		if(op=='/')printf("%d\n",a/b);

	}
return 0;
}