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
#include<iostream>
using namespace std;
int main(){
  int a,b;
  char op;
  cin >> a >> op >> b;
  while(op!='?'){
    int c;
    if(op=='+') c=a+b;
    if(op=='-') c=a-b;
    if(op=='*') c=a*b;
    if(op=='/') c=a/b;
    cout << c << endl;
    cin >> a >> op >> b;
  }
}

