We want to split a group of `n` people (labeled from `1` to `n`) into two groups of any size. Each person may dislike some other people, and they should not go into the same group.

Given the integer `n` and the array `dislikes` where `dislikes[i] = [ai, bi]` indicates that the person labeled `ai` does not like the person labeled `bi`, return `true` if it is possible to split everyone into two groups in this way.

Example 1:

    Input: n = 4, dislikes = [[1,2],[1,3],[2,4]]
    Output: true
    Explanation: group1 [1,4] and group2 [2,3].

Example 2:

    Input: n = 3, dislikes = [[1,2],[1,3],[2,3]]
    Output: false

Example 3:

    Input: n = 5, dislikes = [[1,2],[2,3],[3,4],[4,5],[1,5]]
    Output: false

Constraints:

- `1 <= n <= 2000`
- `0 <= dislikes.length <= 104`
- `dislikes[i].length == 2`
- `1 <= dislikes[i][j] <= n`
- `ai < bi`
- All the pairs of `dislikes` are unique.