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 <bits/stdc++.h>
using namespace std;

int main()
{
    int a, b;
    string op;

    while ((cin >> a >> op >> b), op != "?") {
        cout << (op == "+" ? a + b :
                 op == "-" ? a - b :
                 op == "*" ? a * b :
                 a / b) << endl;
    }

    return 0;
}