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freeCodeCamp/curriculum/challenges/chinese/10-coding-interview-prep/project-euler/problem-388-distinct-lines.md

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Add languages Russian, Arabic, Chinese, Portuguese (#18305)
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---
id: 5900f4f11000cf542c510002
chore(learn): Applied MDX format to Chinese curriculum files (#40462)
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title: 问题388：不同的线条
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challengeType: 5
videoUrl: ''
---
chore(learn): Applied MDX format to Chinese curriculum files (#40462)
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# --description--
Add languages Russian, Arabic, Chinese, Portuguese (#18305)
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chore(learn): Applied MDX format to Chinese curriculum files (#40462)
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考虑所有格点（a，b，c），其中0≤a，b，c≤N。
Add languages Russian, Arabic, Chinese, Portuguese (#18305)
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chore(learn): Applied MDX format to Chinese curriculum files (#40462)
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从原点O（0,0,0）开始，所有线都被绘制到其他格点。设D（N）是不同的这种线的数量。
Add languages Russian, Arabic, Chinese, Portuguese (#18305)
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chore(learn): Applied MDX format to Chinese curriculum files (#40462)
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您被给予D（1 000 000）= 831909254469114121。
Add languages Russian, Arabic, Chinese, Portuguese (#18305)
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chore(learn): Applied MDX format to Chinese curriculum files (#40462)
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找到D（1010）。将前9位数字后跟最后9位数字作为答案。
Add languages Russian, Arabic, Chinese, Portuguese (#18305)
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chore(learn): Applied MDX format to Chinese curriculum files (#40462)
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# --hints--
Add languages Russian, Arabic, Chinese, Portuguese (#18305)
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chore(learn): Applied MDX format to Chinese curriculum files (#40462)
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`euler388()`应该返回831907372805130000。
Add languages Russian, Arabic, Chinese, Portuguese (#18305)
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```js
chore(learn): Applied MDX format to Chinese curriculum files (#40462)
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assert.strictEqual(euler388(), 831907372805130000);
Add languages Russian, Arabic, Chinese, Portuguese (#18305)
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```
chore(learn): Applied MDX format to Chinese curriculum files (#40462)
2020-12-16 07:37:30 +00:00
# --solutions--
fix: insert blank line after ``` search and replace ```\n< with ```\n\n< to ensure there's an empty line before closing tags
2020-08-13 15:24:35 +00:00