which sorting algorithm are you using?

[text] D. Boris and His Amazing Haircut time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output Boris thinks that chess is a tedious game. So he left his tournament early and went to a barber shop as his hair was a bit messy. His current hair can be described by an array aj s . . . a where a is the height of the hair standing at position 4. His desired haircut can be described by an array by by . . . by in a similar fashion. Front Side