55 lines
		
	
	
		
			1.3 KiB
		
	
	
	
		
			Markdown
		
	
	
	
	
	
			
		
		
	
	
			55 lines
		
	
	
		
			1.3 KiB
		
	
	
	
		
			Markdown
		
	
	
	
	
	
| ---
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| id: 5900f5231000cf542c510034
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| challengeType: 5
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| title: 'Problem 438: Integer part of polynomial equation"s solutions'
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| videoUrl: ''
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| localeTitle: 问题438:多项式方程解的整数部分
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| ---
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| 
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| ## Description
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| <section id="description">对于整数的n元组t =(a1,...,an),let(x1,...,xn)是多项式方程xn + a1xn-1 + a2xn-2 + ... +的解。 an-1x + an = 0。 <p>考虑以下两个条件:x1,...,xn都是真实的。如果x1,...,xn被排序,则⌊xi⌋= i,1≤i≤n。 (⌊·⌋:地板功能。) </p><p>在n = 4的情况下,有12个n元组的整数满足两个条件。我们将S(t)定义为t中整数绝对值的总和。对于n = 4,我们可以验证满足两个条件的所有n元组t的ΣS(t)= 2087。 </p><p>找到ΣS(t)为n = 7。 </p></section>
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| 
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| ## Instructions
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| undefined
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| 
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| ## Tests
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| <section id='tests'>
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| 
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| ```yml
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| tests:
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|   - text: ''
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|     testString: 'assert.strictEqual(euler438(), 2046409616809, "<code>euler438()</code> should return 2046409616809.");'
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| 
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| ```
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| 
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| </section>
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| 
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| ## Challenge Seed
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| <section id='challengeSeed'>
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| 
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| <div id='js-seed'>
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| 
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| ```js
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| function euler438() {
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|   // Good luck!
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|   return true;
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| }
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| 
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| euler438();
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| 
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| ```
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| 
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| </div>
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| 
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| 
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| 
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| </section>
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| 
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| ## Solution
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| <section id='solution'>
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| 
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| ```js
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| // solution required
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| ```
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| </section>
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