package q1700

func countStudents(students []int, sandwiches []int) int {
	wants := [2]int{}
	for _, w := range students {
		wants[w]++
	}

	for _, s := range sandwiches {
		if wants[s] == 0 {
			return wants[0] + wants[1]
		}
		wants[s]--
	}
	return 0
}

var _ = countStudents