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:
#include<cstring>
#include<cstdio>
int main(void){
int a,b;
char c[5];
for(;;){
scanf("%d %s %d",&a,c,&b);
if(c[0]=='+') printf("%d\n",a+b);
else if(c[0]=='-') printf("%d\n",a-b);
else if(c[0]=='*') printf("%d\n",a*b);
else if(c[0]=='/') printf("%d\n",a/b);
else if(c[0]=='?') break;
}
return 0;
}