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<stdio.h>
int main(void)
{
	int a,s,f;
	char d[2];
	while(1){
		scanf("%d %c %d",&a,&d[1],&s);
		if(d[1]=='?')
			break;
		if(d[1]=='+')
			f=a+s;
		if(d[1]=='*')
			f=a*s;
		if(d[1]=='-')
			f=a-s;
		if(d[1]=='/')
			f=a/s;
		printf("%d\n",f);
	}
	return 0;
}	