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Number of Longest Increasing Subsequence

Understand how to find the number of longest strictly increasing subsequences in an integer array. Explore dynamic programming approaches and implement solutions to handle sequences by maintaining original order while optimizing for efficiency.

Statement

Given an integer array nums, return the number of longest strictly increasing subsequences it contains.

A subsequence is formed by choosing elements from the array while keeping their original order, and it is considered strictly increasing if every next element is greater than the previous one.

Constraints:

  • 11 \le ...