Hourglass puzzle: Difference between revisions

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println("Flip an hourglass every time it runs out of grains, and note the interval in time.")
i, j = euclidean_hourglassflipper([4, 7], 9)
println("Use hourglasses from step $i to step $j (inclusive) to sum 9")
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Series: [4, 3, 1, 4, 2, 2]
<pre>
Flip an hourglass every time it runs out of grains, and note the interval in time.
Use hourglasses from step 3 to step 6 (inclusive) to sum 9
</pre>
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