Cipher

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Robert Langdon and Sophie Nevue are in The Vatican City, and there are only two hours left until the antimatter explodes. As they fear being compromised, they decide to communicate securely using the following code. They will share their messages along with a key, but only Langdon and Nevue know the algorithm to decrypt the messages. The key is used to generate a sequence of letters containing

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L1 Observation

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L4 Pseudo-code

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solution.cppC++17

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