freeCodeCamp/curriculum/challenges/chinese/10-coding-interview-prep/project-euler/problem-223-almost-right-angled-triangles-i.md

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---
id: 5900f44b1000cf542c50ff5e
title: 问题223几乎是直角三角形I.
challengeType: 5
videoUrl: ''
---
# --description--
如果边满足a2 + b2 = c2 + 1让我们称一个整数边三角形边a≤b≤c几乎不是锐角。
有多少个几乎没有锐角的三角形周长≤25,000,000
# --hints--
`euler223()`应该返回61614848。
```js
assert.strictEqual(euler223(), 61614848);
```
# --solutions--