def square_of_sum (my_array, proc_sum_numbers_name, proc_square_numbers_name)
    sum = proc_sum_numbers_name.call(my_array)
    proc_square_numbers_name.call(sum)
end

my_array           = gets.split().map(&:to_i)
proc_sum_array     = proc{|x| x.reduce(0, :+) }
proc_square_number = proc{|x| x ** 2 }

puts square_of_sum(my_array, proc_sum_array, proc_square_number)