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Find X-Sum of All K-Long Subarrays II

You are given an array nums of n integers and two integers k and x.

You are given an array nums of n integers and two integers k and x.

The x-sum of an array is calculated by the following procedure:

Note that if an array has less than x distinct elements, its x-sum is the sum of the array.

Return an integer array answer of length n - k + 1 where answer[i] is the x-sum of the subarray nums[i..i + k - 1].

Find X-Sum of All K-Long Subarrays II diagram

Example 1

Input: nums = [1,1,2,2,3,4,2,3], k = 6, x = 2

Output: [6,10,12]

Example 2

Input: nums = [3,8,7,8,7,5], k = 2, x = 2

Output: [11,15,15,15,12]

Explanation: Since k == x , answer[i] is equal to the sum of the subarray nums[i..i + k - 1] .

Constraints

  • nums.length == n
  • 1 <= n <= 10^5
  • 1 <= nums[i] <= 10^9
  • 1 <= x <= k <= nums.length

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