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<iostream>
#include<string>
using namespace std;
int main(){
    for(;;){
    int a,c;
    char b;
    cin>>a>>b>>c;
    if(b=='+'){
		cout<<a+c<<endl;
	}
	if(b=='-'){
		cout<<a-c<<endl;
	}
	if(b=='*'){
		cout<<a*c<<endl;
	}
	if(b=='/'){
		cout<<a/c<<endl;
	}
	if(b=='?'){
		break;
	}
}
}

