Make a checkerboard matrix
Let's see how peculiar we can get
Find the product of a Vector
Square a Number
Find x in provided equation!
Find the efficiency
Decipher the message - 3 key
Cipher or Decipher the number according to the second input - 3 keys - order [1 2 3 2 1 2 3 ......]
Decipher the number 2 - 3 keys
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