# 负二进制转换

<p>给出数字&nbsp;<code>N</code>，返回由若干&nbsp;<code>&quot;0&quot;</code>&nbsp;和&nbsp;<code>&quot;1&quot;</code>组成的字符串，该字符串为 <code>N</code>&nbsp;的<strong>负二进制（<code>base -2</code>）</strong>表示。</p>

<p>除非字符串就是&nbsp;<code>&quot;0&quot;</code>，否则返回的字符串中不能含有前导零。</p>

<p>&nbsp;</p>

<p><strong>示例 1：</strong></p>

<pre><strong>输入：</strong>2
<strong>输出：</strong>&quot;110&quot;
<strong>解释：</strong>(-2) ^ 2 + (-2) ^ 1 = 2
</pre>

<p><strong>示例 2：</strong></p>

<pre><strong>输入：</strong>3
<strong>输出：</strong>&quot;111&quot;
<strong>解释：</strong>(-2) ^ 2 + (-2) ^ 1 + (-2) ^ 0 = 3
</pre>

<p><strong>示例 3：</strong></p>

<pre><strong>输入：</strong>4
<strong>输出：</strong>&quot;100&quot;
<strong>解释：</strong>(-2) ^ 2 = 4
</pre>

<p>&nbsp;</p>

<p><strong>提示：</strong></p>

<ol>
	<li><code>0 &lt;= N &lt;= 10^9</code></li>
</ol>

<p>以下错误的选项是？</p>

## aop

### before

```cpp

```
### after

```cpp

```

## 答案

```cpp

```

## 选项


### A

```cpp

```

### B

```cpp

```

### C

```cpp

```
