问题描述

Problem Description

Give you a number on base ten, you should output it on base two.(0 < n < 1000)

Input

For each case there is a postive number n on base ten, end of file.

Output

For each case output a number on base two.

Sample Input

1
2
3

Sample Output

1
10
11

问题分析

Problem Analyse

给你一个十进制的数，输出该数的二进制表示方式。

Algorithm Analyse

数制的转换知识参看2031题。

参考源码