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(void){
  int a,b;
  char str[16];
  char op;
     
  scanf("%d%s%d",&a,str,&b);
  op=str[0];
  while(op!='?'){
    printf("%d\n",op=='+'?a+b:op=='-'?a-b:op=='*'?a*b:a/b);
    scanf("%d%s%d",&a,str,&b);
    op=str[0];
  }
  return 0;
}