codeforces#P1115G2. OR oracle

OR oracle

Description

Implement a quantum oracle on $N$ qubits which implements the following function: $$f(\vec{x}) = x_0 \vee x_1 \vee \dotsb \vee x_{N-1}$$

You have to implement an operation which takes the following inputs:

  • an array of $N$ ($1 \le N \le 8$) qubits $x$ in an arbitrary state (input register),
  • a qubit $y$ in an arbitrary state (output qubit),

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.

Your code should have the following signature:

namespace Solution {
    open Microsoft.Quantum.Primitive;
    open Microsoft.Quantum.Canon;
operation Solve (x : Qubit[], y : Qubit) : Unit {
    body (...) {
        // your code here
    }
    adjoint auto;
}

}

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