package q2483

func bestClosingTime(customers string) int {
	numY := 0
	for i := range len(customers) {
		if customers[i] == 'Y' {
			numY++
		}
	}
	minCloseHour := 0
	minPenalty := numY
	penalty := numY
	for i := range len(customers) {
		// close at (i + 1)th hour
		switch customers[i] {
		case 'N':
			penalty++
		case 'Y':
			penalty--
		}
		if penalty < minPenalty {
			minPenalty = penalty
			minCloseHour = i + 1
		}
	}
	return minCloseHour
}

var _ = bestClosingTime