package q1475

func finalPrices(prices []int) []int {
	st := make([]int, 0, 1024)

	for i := len(prices) - 1; i >= 0; i-- {
		p := prices[i]
		for ; len(st) > 0 && st[len(st)-1] > p; st = st[:len(st)-1] {
		}
		if len(st) > 0 {
			prices[i] = p - st[len(st)-1]
		}
		st = append(st, p)
	}
	return prices
}

var _ = finalPrices