local string = io.read()

local z = tonumber(string)

function sigmoid(x, magnitude)
    if not x or not magnitude then
        x = 1
        magnitude = 1
    end
    return (1 / (1 + math.exp(-x * magnitude)))
end

--print(sigmoid(z, 2))

for i = -20, 20, .5 do
    print(sigmoid(i, 1))
end