Problem:
Simple Calculator

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.

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.

Constraints

0 ≤ a, b ≤ 20000

No divisions by zero are given.

Sample Input 1

1 + 2
56 - 18
13 * 2
100 / 10
27 + 81
0 ? 0

Sample Output 1

3
38
26
10
108

Solution in JavaScript (judge verdict: Wrong Answer)

var line, i, eof_i;

line = require('fs').readFileSync('/dev/stdin', 'ascii').split("\n");
for (i = line.length - 1; i >= 0; i--)
    if (line[i].indexOf("?") !== -1) eof_i = i;
    else line.pop();

for (i in line)
    line[i] = Math.floor(eval(line[i]));

console.log(line.join("\n"));