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 <stdio.h>
int main()
{
while(true)
{
char c;
int a, b;
scanf("%d %c %d", &a, &c, &b);
if( c == '?') break;
int ans = 0;
switch(c)
{
case '+': ans = a+b; break;
case '-': ans = a-b; break;
case '*': ans = a*b; break;
case '/': ans = a/b; break;
}
printf("%d\n", ans);
}
return 0;
}