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Key is 0E3C5A7896B4D2F1 in hexadecimal.
1. Convert to Binary notation.
2. After answering the binary notation of the fourth question, then use the binary notation of your answer and derive C0 and D0 by using initial permutation.
3. After deriving C0 and D0 by using initial permutation, then use your answer of the fifth question and find K1. Then find K1+E(R0).