Hi Dheeraj,

--

First, thanks for your answer!

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Second, it's clear that outputs related to your sample included in problem statement:

1
6

and your sample above:

1
10

are NOT consistent each other.

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In fact, you affirm that for given input:

1
6

Game consists of following turns:

first turn (by Louise):     6 -> 4 -> 2
second turn (by Richard):   2 -> 1 -> RICHARD WINS!

But you affirm that for given input:

1
10

Game consists of following turns:

first turn (by Louise):     10 -> 8 -> 2            (?!)
second turn (by Richard):   2 -> 1 -> RICHARD WINS! (?!)

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First turn in second sample makes no sense, right?

According to given input:

1
10

Game should consist of following turns:

first turn (by Louise):     10 -> 8 -> 4
second turn (by Richard):   4 -> 2
third turn (by Louise):     2 -> 1 -> LOUISE WINS!

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This said, how is it possible that 3 input values between 2^62 and 2^63 give different output values? (for details, see my first comment)

Thanks!

Sergio