CPU scheduling: your program should implement the following CPU scheduling scheme: there are two levels of a ready-queue: one for RT-processes and one for common processes. on each level you practice round-robin. you run common processes only if there is no RT-processes waiting. if RT-process arrives while common process is running, common process gets preemptied and sent to the head of the common processes ready-queue. All I/O-queues are FCFS. Memory: your program should simulate contiguous memory management with "first-fit" approach. You are not allowed to separately represent each byte of memory in your simulation. At the start, your program asks the user three questions: How much RAM memory is there on the simulated computer? Your program receives the number in bytes (no kilobytes or words). I can enter any number up to 4000000000 (4 billions).