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Microsoft Q# Coding Contest - Summer 2018:

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A4. Generate W state

time limit per test

1 secondmemory limit per test

256 megabytesinput

standard inputoutput

standard outputYou are given *N* = 2^{k} qubits (0 ≤ *k* ≤ 4) in zero state . Your task is to create a generalized W state on them. Generalized W state is an equal superposition of all basis states on *N* qubits that have Hamming weight equal to 1:

For example, for *N* = 1, .

You have to implement an operation which takes an array of *N* qubits as an input and has no output. The "output" of the operation 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 (qs : Qubit[]) : ()

{

body

{

// your code here

}

}

}

Codeforces (c) Copyright 2010-2018 Mike Mirzayanov

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