56 lines
		
	
	
		
			1.7 KiB
		
	
	
	
		
			Markdown
		
	
	
	
	
	
			
		
		
	
	
			56 lines
		
	
	
		
			1.7 KiB
		
	
	
	
		
			Markdown
		
	
	
	
	
	
| ---
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| id: 5900f4731000cf542c50ff85
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| challengeType: 5
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| title: 'Problem 262: Mountain Range'
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| videoUrl: ''
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| localeTitle: 问题262:山脉
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| ---
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| 
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| ## Description
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| <section id="description">以下等式表示山区的连续地形,给出任意点(x,y)处的高程h: <p>蚊子打算从A(200,200)飞到B(1400,1400),而不会离开0≤x,y≤1600的区域。 </p><p>由于中间的山脉,它首先直线上升到A'点,具有高度f。然后,在保持在相同高度f的同时,它在任何障碍物周围飞行,直到它到达B正上方的B'点。 </p><p>首先,确定fmin,它是允许从A到B的这种行程的最小恒定高度,同时保持在指定区域。然后,找到A'和B'之间最短路径的长度,同时以恒定高度fmin飞行。 </p><p>将该长度作为答案,四舍五入到小数点后三位。 </p><p>注意:为方便起见,下面以适合大多数编程语言的形式重复上面显示的高程函数:h =(5000-0.005 <em>(x</em> x + y <em>y + x</em> y)+12.5 <em>(x + y))</em> exp( - abs(0.000001 <em>(x</em> x + y <em>y)-0.0015</em> (x + y)+0.7)) </p></section>
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| 
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| ## Instructions
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| <section id="instructions">
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| </section>
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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: <code>euler262()</code>应返回2531.205。
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|     testString: 'assert.strictEqual(euler262(), 2531.205, "<code>euler262()</code> should return 2531.205.");'
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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 euler262() {
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|   // Good luck!
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|   return true;
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| }
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| 
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| euler262();
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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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