# stats calculates sum of a data set. Return value is an integer
# author: 

module Enumerable
 
  #  sum of an array of numbers
  def sum
    return self.inject(0){|acc,i|acc +i}
  end
 
end #  module Enumerable

numbers = []
print "\n"
ARGV.each { |num|  
    i = Float(num)
    numbers << i
}

#n=numbers.sum.to_i
#print n.to_s.gsub(/(\d)(?=\d{3}+(?:\.|$))(\d{3}\..*)?/,'\1,\2')

print numbers.sum.to_i
#print "\n"