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(){
	char a;
	int b,c;
	while(1){scanf("%d %c %d",&b,&a,&c);
	if(a == '+'){
		printf("%d\n",b+c);
	}
		else if(a=='-'){
			printf("%d\n",b-c);
		}
		else if(a=='*'){
			printf("%d\n",b*c);
		}
		else if(a=='/'){
			printf("%d\n",b/c);
		}
		if(a=='?'){
			break;}
	}
	return 0;
}