* feat(tools): add seed/solution restore script * chore(curriculum): remove empty sections' markers * chore(curriculum): add seed + solution to Chinese * chore: remove old formatter * fix: update getChallenges parse translated challenges separately, without reference to the source * chore(curriculum): add dashedName to English * chore(curriculum): add dashedName to Chinese * refactor: remove unused challenge property 'name' * fix: relax dashedName requirement * fix: stray tag Remove stray `pre` tag from challenge file. Signed-off-by: nhcarrigan <nhcarrigan@gmail.com> Co-authored-by: nhcarrigan <nhcarrigan@gmail.com>
45 lines
1.1 KiB
Markdown
45 lines
1.1 KiB
Markdown
---
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id: 5900f4a11000cf542c50ffb4
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title: 问题309:整数阶梯
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challengeType: 5
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videoUrl: ''
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dashedName: problem-309-integer-ladders
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---
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# --description--
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在经典的“穿越梯子”问题中,我们得到了两个梯子的长度x和y,它们位于一条狭窄的水平街道的相对壁上。 我们还给出了两个梯子交叉的街道上方的高度h,并要求我们找到街道的宽度(w)。
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在这里,我们仅关注所有四个变量均为正整数的实例。 例如,如果x = 70,y = 119,h = 30,我们可以计算出w = 56。
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实际上,对于x,y,h和0 <x <y <200的整数,只有五个三元组(x,y,h)产生w的整数解: (70、119、30),(74、182、21),(87、105、35),(100、116、35)和(119、175、40)。
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对于整数值x,y,h和0 <x <y <1 000 000,有多少个三元组(x,y,h)产生w的整数解?
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# --hints--
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`euler309()`应该返回210139。
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```js
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assert.strictEqual(euler309(), 210139);
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```
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# --seed--
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## --seed-contents--
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```js
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function euler309() {
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return true;
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}
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euler309();
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```
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# --solutions--
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```js
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// solution required
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```
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