56 lines
1.1 KiB
Markdown
56 lines
1.1 KiB
Markdown
|
---
|
|||
|
id: 5900f5471000cf542c510059
|
|||
|
challengeType: 5
|
|||
|
title: 'Problem 474: Last digits of divisors'
|
|||
|
videoUrl: ''
|
|||
|
localeTitle: 问题474:除数的最后数字
|
|||
|
---
|
|||
|
|
|||
|
## Description
|
|||
|
<section id="description">对于正整数n和数字d,我们将F(n,d)定义为n的除数的数,其最后的数字等于d。例如,F(84,4)= 3.在84的除数中(1,2,3,4,6,7,12,14,21,28,42,84),其中三个(4,14) ,84)有最后一位数字4。 <p>我们还可以验证F(12!,12)= 11和F(50!,123)= 17888。 </p><p>找到F(106!,65432)modulo(1016 + 61)。 </p></section>
|
|||
|
|
|||
|
## Instructions
|
|||
|
<section id="instructions">
|
|||
|
</section>
|
|||
|
|
|||
|
## Tests
|
|||
|
<section id='tests'>
|
|||
|
|
|||
|
```yml
|
|||
|
tests:
|
|||
|
- text: <code>euler474()</code>应该返回9690646731515010。
|
|||
|
testString: 'assert.strictEqual(euler474(), 9690646731515010, "<code>euler474()</code> should return 9690646731515010.");'
|
|||
|
|
|||
|
```
|
|||
|
|
|||
|
</section>
|
|||
|
|
|||
|
## Challenge Seed
|
|||
|
<section id='challengeSeed'>
|
|||
|
|
|||
|
<div id='js-seed'>
|
|||
|
|
|||
|
```js
|
|||
|
function euler474() {
|
|||
|
// Good luck!
|
|||
|
return true;
|
|||
|
}
|
|||
|
|
|||
|
euler474();
|
|||
|
|
|||
|
```
|
|||
|
|
|||
|
</div>
|
|||
|
|
|||
|
|
|||
|
|
|||
|
</section>
|
|||
|
|
|||
|
## Solution
|
|||
|
<section id='solution'>
|
|||
|
|
|||
|
```js
|
|||
|
// solution required
|
|||
|
```
|
|||
|
</section>
|