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 <cstdio>

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