60 lines
827 B
Markdown
60 lines
827 B
Markdown
---
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id: 5900f46e1000cf542c50ff81
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challengeType: 5
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title: 'Problem 258: A lagged Fibonacci sequence'
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---
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## Description
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<section id='description'>
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A sequence is defined as:
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gk = 1, for 0 ≤ k ≤ 1999
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gk = gk-2000 + gk-1999, for k ≥ 2000.
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Find gk mod 20092010 for k = 1018.
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</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>euler258()</code> should return 12747994.
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testString: 'assert.strictEqual(euler258(), 12747994, "<code>euler258()</code> should return 12747994.");'
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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 euler258() {
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// Good luck!
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return true;
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}
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euler258();
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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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