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:
//itp1_topic1_a
#include <bits/stdc++.h>
using namespace std;

int main(){
 while(1){
 int a,b;
 string op;
 cin >>a>>op>>b;
 if(op =="?") break;
 
 int ans;
 if(op =="+") ans =a+b;
 if(op =="-") ans =a-b;
 if(op =="*") ans=a*b;
 if(op =="/") ans=a/b;


 cout<<ans<<endl;
 }

}