` ````
```

Loading Question ...

You have **n** super washing machines on a line. Initially, each washing machine has some dresses or is empty.

For each **move**, you could choose **any m** (1 ≤ m ≤ n) washing machines, and pass **one dress** of each washing machine to one of its adjacent washing machines ** at the same time **.

Given an integer array representing the number of dresses in each washing machine from left to right on the line, you should find the **minimum number of moves** to make all the washing machines have the same number of dresses. If it is not possible to do it, return -1.

**Example1**

Input:[1,0,5]Output:3Explanation:1st move: 1 0 <-- 5 => 1 1 4 2nd move: 1 <-- 1 <-- 4 => 2 1 3 3rd move: 2 1 <-- 3 => 2 2 2

**Example2**

Input:[0,3,0]Output:2Explanation:1st move: 0 <-- 3 0 => 1 2 0 2nd move: 1 2 --> 0 => 1 1 1

**Example3**

Input:[0,2,0]Output:-1Explanation:It's impossible to make all the three washing machines have the same number of dresses.

**Note:**

- The range of n is [1, 10000].
- The range of dresses number in a super washing machine is [0, 1e5].

Seen this question in a real interview before?

Yes

No

When did you encounter this question?

last week

last month

last 3 month

last 6 month

more than 6 months

other

Which stage?

Online Assessment

Phone Interview

On Campus Interview

Onsite Interview

Don't know

Which company?

Adobe

Aetion

Airbnb

Alibaba

Amazon

Apple

Baidu

Bloomberg

Cloudera

Coursera

Cryptic Studios

Dropbox

eBay

Epic Systems

Expedia

Facebook

Fallible

Games

Gilt Groupe

GoDaddy

Goo

Google

Hedvig

Helix

Houzz

Hulu

Indeed

Intuit

IXL

LinkedIn

LiveRamp

Lyft

MAQ Software

Mathworks

Microsoft

NetEase

Netsuite

Palantir

Palantir Technologies

Pinterest

Pocket Gems

Poynt

Pure

Pure Storage

Rackspace

Radius

Riot

Riot Games

Samsung

Snapchat

Square

Storage

Tencent

TinyCo

Twitter

Two Sigma

Uber

Valve

WAP

Works Applications

Yahoo

Yahoo!

Yelp

Zappos

Zenefits

How can we help you?