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>
using namespace std;
int main(){
int x, y;
char op;
for (int i = 0; ; i++){
cin >> x >> op >> y;
if (op=='+') cout << x+y << endl;
else if (op=='-') cout << x-y << endl;
else if (op=='*') cout << x*y << endl;
else if (op=='/') cout << x/y << endl;
else if (op=='?') break;
}
}