judges give grades for figure skaters. Technical worker of competition removes all maximum and all minimum grades and calculates the arithmetic mean of the grades left. This result is considered to be the number of points earned by athlete. Find the number of points earned by each athlete.
The first line contains two numbers: the number of judges and the number of sportsmen . Each of the next lines contains integers — the grades of all judges for each figure skater.
Print in one line numbers with two decimal digits — the number of points earned by each sportsman.