def pi():
    N = 0
    n, d = 0, 1
    while True:
        xn = (120*N**2 + 151*N + 47)
        xd = (512*N**4 + 1024*N**3 + 712*N**2 + 194*N + 15)
        n = ((16 * n * xd) + (xn * d)) % (d * xd)
        d *= xd
        yield 16 * n // d
        N += 1
 
 
pi_gen = pi()
import sys
sys.stdout.write("pi = 3.")
for i in range(2000):
    sys.stdout.write("0123456789ABCDEF"[pi_gen.next()])
    if (((i+1) % 64) == 0):
       sys.stdout.write("+\n")
sys.stdout.write("\n")
 

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