function calculateSum(N, numbers)
  local sum = 0
  local result = {}

  for i = 1, N do
    sum = sum + math.sqrt(numbers[i])
    result[i] = sum
  end

  return result
end

local N = tonumber(io.read())
local numbers = {}

for i = 1, N do
  numbers[i] = tonumber(io.read())
end

local results = calculateSum(N, numbers)

for i = 1, N do
  print(string.format("%20f", results[i]))
end