Codechef solution for " Easy Math (prob code : RPD) " in Ruby

Easy-Math.rb

n = gets.to_i
count = []
a = []
n.times do
  count << gets.to_i
  s = gets.strip.split(/\s+/).map(&:to_i)
  a << s
  #p sum.max
end
a.each do |i|
  sum = []
  for x in 0..i.count do
  for y in x+1...i.count do
    sum << (i[x]*i[y]).to_s.split('').map{|e| e.to_i}.reduce(:+)
  end
  end
  p sum.max
end