Integer num$\_$rows is read from input, representing the number of rows in a two$-$dimensional list. List num$\_$list is a two$-$

dimensional list containing the remaining integers read from input. Assign aggregate$\_$value with the total number of elements in

num$\_$list.

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Note:

sum$($a$\_$list$)$ returns the sum of all the elements in a$\_$list given that a$\_$list contains numbers only.

len$($a$\_$list$)$ returns the number of elements in a$\_$list.

# Read input

num$\_$rows input $()$