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DRM Encryption is a new kind of encryption. Given an encrypted string (which we’ll call a DRM message), the decryption process involves three steps: Divide, Rotate and Merge. This process is described in the following example with the DRM message “EWPGAJRB”:
The input contains a single DRM message to be decrypted. All characters in the string are uppercase letters and the string’s length is even and ≤ 15 000.
Display the decrypted DRM message.