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,b,t,c,f;
	char s;
	for(;;){
	scanf("%d %c %d",&a,&s,&b);
	if(s=='+'){
		t=a+b;
	}
	
	if(s=='-'){
		t=a-b;
	}
	
	
	if(s=='/'){
		t=a/b;
	}
	
	
	if(s=='*'){
		t=a*b;
	}
		if(s=='?'){
		break;
		}
		printf("%d\n",t);
	}

		
}