Count deletions making array fair

Question

LeetCode 1664. Ways to Make a Fair Array – Given an integer array nums, count the indices whose removal results in the sum of elements at even indices equaling the sum at odd indices (k = 1). Follow-up: extend the algorithm to count ways after deleting exactly k elements.

https://leetcode.com/problems/ways-to-make-a-fair-array/description/open_in_new