Sentinel Returns

Submitted by: rickHH
Hints:
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At first, you start off with only 10 units of energy,
represented as 3 robots and a tree. You will have to be
able to calculate the amount of energy you have at a glance.
Since each tree is worth 1 point of energy on the landscape,
each boulder is worth two, and each of your robots is worth
three, that is how your energy is represented. A gold robot
is equal to 5 normal robots, or 15 units of energy. The basic
guide is simply to look at the amount of robots you have, and
multiply that by 3.