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---
id: 5900f43e1000cf542c50ff50
challengeType: 5
title: 'Problem 210: Obtuse Angled Triangles'
videoUrl: ''
localeTitle: 'Проблема 210: Тонкие треугольные треугольники'
---
## Description
<section id="description"> Рассмотрим множество S (r) точек (x, y) с целыми координатами, удовлетворяющими | x | + | y | ≤ r. Пусть O - точка (0,0) и C - точка (r / 4, r / 4). Пусть N (r) - число точек B в S (r), так что треугольник OBC имеет тупой угол, т. Е. Наибольший угол α удовлетворяет 90 ° &lt;α &lt;180 °. Так, например, N (4) = 24 и N (8) = 100. <p> Что такое N (1,000,000,000)? </p></section>
## Instructions
<section id="instructions">
</section>
## Tests
<section id='tests'>
```yml
tests:
- text: <code>euler210()</code> должен вернуть 1598174770174689500.
testString: 'assert.strictEqual(euler210(), 1598174770174689500, "<code>euler210()</code> should return 1598174770174689500.");'
```
</section>
## Challenge Seed
<section id='challengeSeed'>
<div id='js-seed'>
```js
function euler210() {
// Good luck!
return true;
}
euler210();
```
</div>
</section>
## Solution
<section id='solution'>
```js
// solution required
```
</section>