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<bits/stdc++.h>
using namespace std;
int main(){
  int a, c;
char b;
bool flag = true;
while(flag){
cin >> a >> b >> c;
if(b == '+')cout << a+c << endl;
else if(b == '-')cout << a-c << endl;
else if(b == '*')cout << a*c << endl;
else if(b=='/')cout << a/c << endl;
else if(b=='?') break;
}
}
