Assume that bears weigh $369$ pounds each, llamas weigh $328$ pounds each, and lions weigh $492$ pounds each. Given variables num$\_$bears, num$\_$llamas, and num$\_$lions read from input, compute the average weight of all the bears, llamas, and lions, and assign average$\_$weight with the result.

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Ex: If the input is:

$3$

$11$

$27$

then the output is:

Average weight: $439\mathrm{.}00$