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Microsoft Q# Coding Contest - Summer 2018 - Warmup:

- Microsoft Q#

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E. Distinguish Bell states

time limit per test

1 secondmemory limit per test

256 megabytesinput

standard inputoutput

standard outputYou are given two qubits which are guaranteed to be in one of the Bell states:

Your task is to perform necessary operations and measurements to figure out which state it was and to return the index of that state (0 for , 1 for etc.). The state of the qubits after the operations does not matter.

Input

You have to implement an operation which takes an array of two qubits as an input and returns an integer.

Your code should have the following signature:

namespace Solution {

open Microsoft.Quantum.Primitive;

open Microsoft.Quantum.Canon;

operation Solve (qs : Qubit[]) : Int

{

body

{

// your code here

}

}

}

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