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 main(){

  int a,b;
  char op;

  while(1){
    scanf("%d %c %d",&a,&op,&b);
    if(op=='?') break;
    if(op=='+') printf("%d",a+b);
    if(op=='-') printf("%d",a-b);
    if(op=='*') printf("%d",a*b);
    if(op=='/') printf("%d",a/b);
    printf("\n");
  }


  return 0;
}