def square_of_sum (my_array, proc_square, proc_sum)
    sum = proc_sum.call(my_array)
    proc_square.call(sum)
end

proc_square_number = proc { |num| num * num }
proc_sum_array     = proc { |my_array| my_array.sum }
my_array = gets.split().map(&:to_i)

puts square_of_sum(my_array, proc_square_number, proc_sum_array)