# 1785. Minimum Elements to Add to Form a Given Sum

<https://leetcode.com/problems/minimum-elements-to-add-to-form-a-given-sum>

## Description

You are given an integer array `nums` and two integers `limit` and `goal`. The array `nums` has an interesting property that `abs(nums[i]) <= limit`.

Return *the minimum number of elements you need to add to make the sum of the array equal to* `goal`. The array must maintain its property that `abs(nums[i]) <= limit`.

Note that `abs(x)` equals `x` if `x >= 0`, and `-x` otherwise.

**Example 1:**

```
**Input:** nums = [1,-1,1], limit = 3, goal = -4
**Output:** 2
**Explanation:** You can add -2 and -3, then the sum of the array will be 1 - 1 + 1 - 2 - 3 = -4.
```

**Example 2:**

```
**Input:** nums = [1,-10,9,1], limit = 100, goal = 0
**Output:** 1
```

**Constraints:**

* `1 <= nums.length <= 105`
* `1 <= limit <= 106`
* `-limit <= nums[i] <= limit`
* `-109 <= goal <= 109`

## ac

```java
```
