56 lines
		
	
	
		
			1.2 KiB
		
	
	
	
		
			Markdown
		
	
	
	
	
	
		
		
			
		
	
	
			56 lines
		
	
	
		
			1.2 KiB
		
	
	
	
		
			Markdown
		
	
	
	
	
	
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								---
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								id: 5900f4c71000cf542c50ffd8
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								challengeType: 5
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								title: 'Problem 346: Strong Repunits'
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								videoUrl: ''
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								localeTitle: 问题346:强大的Repunits
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								---
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								## Description
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								<section id="description">数字7是特殊的,因为7是用基数2写的111,用基数6写的是11(即710 = 116 = 1112)。换句话说,7是至少两个碱基b> 1的重新排列。 <p>我们将调用一个正整数,该属性是一个强大的repunit。可以证实,在50以下有8个强大的重新命令:{1,7,13,15,21,31,40,43}。此外,1000以下的所有强大的重新命令的总和等于15864。 </p><p>找出1012以下所有强大的回购总和。 </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>euler346()</code>应该返回336108797689259260。
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								    testString: 'assert.strictEqual(euler346(), 336108797689259260, "<code>euler346()</code> should return 336108797689259260.");'
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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 euler346() {
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								  // Good luck!
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								  return true;
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								}
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								euler346();
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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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