package q1653

func minimumDeletions(s string) int {
	bestA, bestB := 0, 0

	for i := range len(s) {
		switch s[i] {
		case 'a':
			bestB++
		case 'b':
			bestA, bestB = bestA+1, min(bestA, bestB)
		}
	}

	return min(bestA, bestB)
}

var _ = minimumDeletions