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 <stdio.h>

int a,b;
char op;

int main(){
  while(1){
  scanf("%d %c %d",&a,&op,&b);
  switch(op){
    case '?' : return 0;
    case '+' : printf("%d\n",a+b);break;
    case '-' : printf("%d\n",a-b);break;
    case '*' : printf("%d\n",a*b);break;
    case '/' : printf("%d\n",a/b);break;
  }
}
}