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 JAVA):

Solution:
import java.util.*;
public class Main{
  public static void main(String[] args){
    Scanner sc=new Scanner(System.in);
    while(true){
	int a=sc.nextInt();
	char op=sc.next().charAt(0);
	int b=sc.nextInt();
	if(op=='?'){
	    break;
	}
	else if(op=='+'){
	    System.out.println(a+b);
	}
	else if(op=='-'){
	    System.out.println(a-b);
	}
	else if(op=='*'){
	    System.out.println(a*b);
	}
	else if(op=='/'){
	    System.out.println(a/b);
	}
    }
  }
}