freeCodeCamp/curriculum/challenges/chinese/10-coding-interview-prep/project-euler/problem-393-migrating-ants.md

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---
id: 5900f4f61000cf542c510008
title: 问题393迁移蚂蚁
challengeType: 5
videoUrl: ''
dashedName: problem-393-migrating-ants
---
# --description--
n×n正方形网格包含n2个蚂蚁每平方一个蚂蚁。所有蚂蚁决定同时移动到相邻的广场通常有4种可能除了网格边缘或角落处的蚂蚁。我们将fn定义为在没有任何蚂蚁在同一个正方形上结束并且没有任何两个蚂蚁穿过两个正方形之间的相同边缘时可以发生的方式的数量。
给出f4= 88.求f10
# --hints--
`euler393()`应该返回112398351350823100。
```js
assert.strictEqual(euler393(), 112398351350823100);
```
# --seed--
## --seed-contents--
```js
function euler393() {
return true;
}
euler393();
```
# --solutions--
```js
// solution required
```