exmachina-bluebook.py

exmachina-bluebook.py

#!/bin/python
#
# Credit: "Ex Machina" film team
# See: https://i.imgur.com/C44iJeR.jpg
# -------------------------------

#BlueBook code decryption

import sys

def sieve(n):
# Compute primes using sieve of Eratosthemes

    x = [1] * n
    x[1] = 0
    for i in range(2,n/2):
            j = 2 * i
            while j < n:
                    x[j]=0
                    j = j+i
    return x

def prime(n,x):
# Find nth prime

    i = 1
    j = 1
    while j <= n:
            if x[i] == 1:
                    j = j + 1
            i = i + 1
    return i - 1

# Compute BlueBook unlock code

x=sieve(10000)
code = [1206,301,384,5]
key =[1,1,2,2,]

sys.stdout.write("".join(chr(i) for i in [73,83,66,78,32,61,32]))

for i in range (0,4):
    sys.stdout.write(str(prime(code[i],x)-key[i]))

print