def SquareRoot (N):
    Guess = N / 2.0
    Quotient = N / Guess
    NewGuess = (Guess + Quotient) / 2.0

    while (abs(Guess - NewGuess) > 1.0e-15):
        print (Guess, NewGuess)
        Guess = NewGuess
        Quotient = N / Guess
        NewGuess = (Guess + Quotient) / 2.0

    return NewGuess



Frog = float(input("Enter a number to square root --- "))
Answer = SquareRoot(SquareRoot(Frog) +  1)
print (Answer)