--- id: 5900f44e1000cf542c50ff5f challengeType: 5 title: 'Problem 224: Almost right-angled triangles II' videoUrl: '' localeTitle: 问题224:几乎直角三角形II --- ## Description 如果边满足a2 + b2 = c2 - 1,让我们称一个边长为a≤b≤c的整数边三角形,几乎不会钝。 有多少个几乎没有钝角的三角形,周长≤75,000,000? ## Instructions ## Tests ```yml tests: - text: euler224()应返回4137330。 testString: 'assert.strictEqual(euler224(), 4137330, "euler224() should return 4137330.");' ``` ## Challenge Seed ```js function euler224() { // Good luck! return true; } euler224(); ``` ## Solution ```js // solution required ```
有多少个几乎没有钝角的三角形,周长≤75,000,000?
euler224()