56 lines
1.1 KiB
Markdown
56 lines
1.1 KiB
Markdown
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---
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id: 5900f43e1000cf542c50ff50
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challengeType: 5
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title: 'Problem 210: Obtuse Angled Triangles'
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videoUrl: ''
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localeTitle: 问题210:钝角三角形
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---
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## Description
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<section id="description">考虑点(x,y)的集合S(r),其中整数坐标满足| x | + | y | ≤r。设O为点(0,0),C为点(r / 4,r / 4)。令N(r)为S(r)中的点B的数量,使得三角形OBC具有钝角,即最大角度α满足90°<α<180°。因此,例如,N(4)= 24并且N(8)= 100。 <p>什么是N(1,000,000,000)? </p></section>
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## Instructions
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<section id="instructions">
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</section>
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## Tests
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<section id='tests'>
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```yml
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tests:
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- text: <code>euler210()</code>应该返回1598174770174689500。
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testString: 'assert.strictEqual(euler210(), 1598174770174689500, "<code>euler210()</code> should return 1598174770174689500.");'
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```
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</section>
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## Challenge Seed
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<section id='challengeSeed'>
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<div id='js-seed'>
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```js
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function euler210() {
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// Good luck!
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return true;
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}
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euler210();
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```
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</div>
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</section>
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## Solution
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<section id='solution'>
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```js
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// solution required
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```
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</section>
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