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 <= 20000 <= dislikes.length <= 104dislikes[i].length == 21 <= dislikes[i][j] <= nai < bidislikes are unique.