# 1452. People Whose List of Favorite Companies Is Not a Subset of Another List

https://leetcode.com/problems/people-whose-list-of-favorite-companies-is-not-a-subset-of-another-list

## Description

Given the array `favoriteCompanies` where `favoriteCompanies[i]` is the list of favorites companies for the `ith` person (**indexed from 0**).

_Return the indices of people whose list of favorite companies is not a **subset** of any other list of favorites companies_. You must return the indices in increasing order.

**Example 1:**

```
**Input:** favoriteCompanies = [["leetcode","google","facebook"],["google","microsoft"],["google","facebook"],["google"],["amazon"]]
**Output:** [0,1,4] 
**Explanation:** 
Person with index=2 has favoriteCompanies[2]=["google","facebook"] which is a subset of favoriteCompanies[0]=["leetcode","google","facebook"] corresponding to the person with index 0. 
Person with index=3 has favoriteCompanies[3]=["google"] which is a subset of favoriteCompanies[0]=["leetcode","google","facebook"] and favoriteCompanies[1]=["google","microsoft"]. 
Other lists of favorite companies are not a subset of another list, therefore, the answer is [0,1,4].
```

**Example 2:**

```
**Input:** favoriteCompanies = [["leetcode","google","facebook"],["leetcode","amazon"],["facebook","google"]]
**Output:** [0,1] 
**Explanation:** In this case favoriteCompanies[2]=["facebook","google"] is a subset of favoriteCompanies[0]=["leetcode","google","facebook"], therefore, the answer is [0,1].
```

**Example 3:**

```
**Input:** favoriteCompanies = [["leetcode"],["google"],["facebook"],["amazon"]]
**Output:** [0,1,2,3]
```

**Constraints:**

* `1 <= favoriteCompanies.length <= 100`
* `1 <= favoriteCompanies[i].length <= 500`
* `1 <= favoriteCompanies[i][j].length <= 20`
* All strings in `favoriteCompanies[i]` are **distinct**.
* All lists of favorite companies are **distinct**, that is, If we sort alphabetically each list then `favoriteCompanies[i] != favoriteCompanies[j].`
* All strings consist of lowercase English letters only.

## ac

```java
```
