B'Implement a quantum oracle on N qubits which checks whether the number of bits equal to 1 in the input vector vec{x} is divisible by 3 (i.e., implements the function f( vec{x}) = 1 if the number of x_i = 1 in vec{x} is divisible by 3, and 0 otherwise). You have to implement an operation which takes the following inputs: and performs a transformation |x rangle|y rangle rightarrow |x rangle|y oplus f(x) rangle . The operation doesn 't have an output; its "output" is the state in which it leaves the qubits. Note that the input register x has to remain unchanged after applying the operation. Your code should have the following signature: Note: the operation has to have an adjoint specified for it; adjoint auto means that the adjoint will be generated automatically. For details on adjoint, see Operation Declarations. You are not allowed to use measurements in your operation. '...