def gi
  gets.to_i
end

def gm
  gets.split.map(&:to_i)
end

def gc
  gets.chomp
end

def gf
  gets.to_f
end

n = gi
sum = 0.0
result = []
n.times do
  x = gi
  sum += Math.sqrt(x)
  result << sum
end
puts result.map { |x| format("%.20f", x) }