Problem 47813. Cipher or Decipher the number according to the second input - 3 keys

Sibi

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You will be given a input number (eg)  x=12345 and y=1
you have to figure out the chiper keys and match it with given input and cipher it and decipher it according to second input
ref=[0 1 2 3 4 5 6 7 8 9 ]; cipher_key_1=[ 1 2 3 4 5 6 7 8 9 0] ;cipher_key_2=[ 3 4 5 6 7 8 9 0 1 2];
cipher_key_3=[ 2 3 4 5 6 7 8 9 0 1];
---> These are not real keys , just an example
eg  x=12345
if y=1
output y=23456
if y=2  x=23456
output=12345;
Hint : index :  1:3:end     -> key 1  
                            2:3:end -> key 2 
                                3:3:end  -> key 3  