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 n,m,res;
char op;

int main() {
 while(true){
  scanf("%d %c %d",&n,&op,&m);
  if(op=='?')break;
  switch(op){
   case '+': res=n+m;break;
   case '-': res=n-m;break;
   case '*': res=n*m;break;
   case '/': res=n/m;break;
  }
  printf("%d\n",res);
 }
 return 0;
}