Question: We are given a length - preserving one - way function ( f = { f _ lambda : { 0

We are given a length-preserving one-way function \( f =\{f_\lambda : \{0,1\}^\lambda \to \{0,1\}^\lambda\}_{\lambda \in \mathbb{N}}\). Is the function \( x \mapsto f(f(x))\) also one-way?

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