n soldiers standing in a line. Each soldier is assigned a unique
You have to form a team of 3 soldiers amongst them under the following rules:
k) with rating (
rating[i] < rating[j] < rating[k]) or (
rating[i] > rating[j] > rating[k]) where (
0 <= i < j < k < n).
Return the number of teams you can form given the conditions. (soldiers can be part of multiple teams).
Input: rating = [2,5,3,4,1] Output: 3 Explanation: We can form three teams given the conditions. (2,3,4), (5,4,1), (5,3,1).
Input: rating = [2,1,3] Output: 0 Explanation: We can't form any team given the conditions.
Input: rating = [1,2,3,4] Output: 4
n == rating.length
3 <= n <= 1000
1 <= rating[i] <= 105