class A def initialize n = gets.chomp.to_i a = gets.chomp.split(' ').map(&:to_i) crane = 0 turtle = 0 sum = a.inject(:+) / (n-1) a.each do |num| if sum - num == 2 crane += 1 else turtle += 1 end end puts [crane, turtle].join(' ') end end A.new