// Package q3432 implements a solution for https://leetcode.com/problems/count-partitions-with-even-sum-difference/
package q3432

func countPartitions(nums []int) int {
	sumR := 0
	for i := range nums {
		sumR += nums[i]
	}

	sumL := 0
	cnt := 0

	for i := range len(nums) - 1 {
		sumL += nums[i]
		sumR -= nums[i]
		if (sumL-sumR)%2 == 0 {
			cnt++
		}
	}

	return cnt
}

var _ = countPartitions