from decimal import *

getcontext().prec = 1024

ONE = Decimal(1)
TWO = Decimal(2)
FOUR = Decimal(4)
HALF = Decimal(1/TWO)

a = ONE
x = ONE
b = TWO**(-HALF)
c = ONE/FOUR

def circuit():
    global a, x, b, c
    print(((a+b)**TWO)/(FOUR*c))
    y = a
    a = (a + b) / TWO
    b = (b * y).sqrt()
    c = c - x * (a - y)**TWO
    x = TWO*x