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Some solutions published below omit the first condition (x>y) but it works only because there are no test cases with x>y and arr[x-1] even (you can make your own test case to see that it would fail in such event.
Explanation: x>y is odd, odd^anything is odd, anything^0 is odd, everything else is even.
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Even Odd Query
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Python oneliner:
Some solutions published below omit the first condition (
x>y) but it works only because there are no test cases withx>yandarr[x-1]even (you can make your own test case to see that it would fail in such event.Explanation: x>y is odd, odd^anything is odd, anything^0 is odd, everything else is even.