leetcode-problemset/算法题（国外版）/count-square-sum-triples.html

<p>A <strong>square triple</strong> <code>(a,b,c)</code> is a triple where <code>a</code>, <code>b</code>, and <code>c</code> are <strong>integers</strong> and <code>a<sup>2</sup> + b<sup>2</sup> = c<sup>2</sup></code>.</p>

<p>Given an integer <code>n</code>, return <em>the number of <strong>square triples</strong> such that </em><code>1 &lt;= a, b, c &lt;= n</code>.</p>

<p>&nbsp;</p>
<p><strong>Example 1:</strong></p>

<pre>
<strong>Input:</strong> n = 5
<strong>Output:</strong> 2
<strong>Explanation</strong>: The square triples are (3,4,5) and (4,3,5).
</pre>

<p><strong>Example 2:</strong></p>

<pre>
<strong>Input:</strong> n = 10
<strong>Output:</strong> 4
<strong>Explanation</strong>: The square triples are (3,4,5), (4,3,5), (6,8,10), and (8,6,10).
</pre>

<p>&nbsp;</p>
<p><strong>Constraints:</strong></p>

<ul>
	<li><code>1 &lt;= n &lt;= 250</code></li>
</ul>