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 "cstdio"

int main(){
char op;
int a,b,ans;
while(1){
scanf("%d  %c %d",&a,&op,&b);
if(op == '?') break;
switch(op){
case '+':
ans = a+b;
break;

case '-':
ans = a-b;
break;

case '*':
ans = a*b;
break;

case '/':
ans = a/b;
break;
}
printf("%d\n",ans);
}
}