You are given an array A representing heights of students. All the students are asked to stand in rows. The students arrive by one, sequentially (as their heights appear in A). For the i-th student, if there is a row in which all the students are taller than A[i], the student will stand in one of such rows. If there is no such row, the student will create a new row. Your task is to find the minimum number of rows created. Write a function that, given a non-empty array A containing N integers, denoting the heights of the students, returns the minimum number of rows created.

Two technicians are discussing the common u-joint. technician a says its input and output speeds should be equal. technician b says that it normally has two yokes. which technician is correct?

Write a program that prints the day number of the year, given the date in the form month-day-year. for example, if the input is 1-1-2006, the day number is 1; if the input is 12-25-2006, the day number is 359. the program should check for a leap year. a year is a leap year if it is divisible by 4, but not divisible by 100. for example, 1992 and 2008 are divisible by 4, but not by 100. a year that is divisible by 100 is a leap year if it is also divisible by 400. for example, 1600 and 2000 are divisible by 400. however, 1800 is not a leap year because 1800 is not divisible by 400.

What multimedia system creates an immersive, real-life experience that the user can interact with?