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step by step solution in 3rd party category for AMSCO Cipher by ojisan
import numpy
def decode_amsco(message, key):
L=len(message)
N=len(str(key))
M=int(L/1.5)//N+1
# Create key dictionary
kd = {int(j)-1:i for i,j in enumerate(str(key))}
# Create symmetric container matrix and serialize
sx = [(i+j)%2+1 for i in range(M) for j in range(N)]
# Calculate cumulative sum
sx = numpy.cumsum(sx)
# Cut extra part of it
sx = [0]+[x if x
April 6, 2019
