package main

import "math"

func maxSubArray(nums []int) (res int) {
	// 维护、更新最小前缀和
	Min := 0
	preFixSum := 0
	res = math.MinInt32
	for i := 0; i < len(nums); i++ {
		preFixSum += nums[i]
		res = max(res, preFixSum-Min)
		Min = min(preFixSum, Min)
	}
	return res
}

func max(a, b int) int {
	if a > b {
		return a
	}
	return b
}

func min(a, b int) int {
	if a < b {
		return a
	}
	return b
}

func main() {

}