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BEBRAS

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STUDENT: NICOLAS NINO LOZANO

BEBRAS CHALLENGE: BEAVERS AND THE BROKEN BRIDGE


A group of 6 beavers want to cross a bridge, but the bridge needs 3 wood planks for being
crossed. each beaver has 2 wood planks to place on the bridge. however, each wood plank
can be used just twice otherwise it will break. also, the beavers can lend each other one
wood plank; a beaver can have at the most just 3 wood planks. finally, there is a bucket to
place the extra wood planks.
TASK:
Can all the beavers cross the bridge with the wood planks they have? if so, how many extra
wood planks would there be?
SOLUTION
Yes, all the beavers can cross the bridge, and there are enough tables to do so, but the
question now is how many extra wood planks are there? To begin, we must understand that
the bridge requires three wood planks, and two beavers can cross the bridge with only three
tables, because each table can be used twice. In other words, a couple of beavers requires
only three tables, so with three couples, they will require only nine tables. Therefore, there
would be 3 extra wood planks.

RELATION WITH INFORMATICS


This is a simple example of systems optimization, because even when we have a lot of
extra resources to complete a task, we should try to use the fewest number of resources
possible, so that we can make a simple process that is easy to read. It is also a good way to
recognize how the data could be read in a different way, allowing us to come up with new
and unique solutions.

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