class FindTotalValue2
    attr_reader :n, :a
    
        def initialize(n: 0, a: [])
            @n, @a = n, a
        end
    
        def datainput
            begin
                @n = Integer(gets.chomp)
                @a = @n.times.map { Integer(gets.chomp) }
            rescue
                
            end
        end

        def dataoutput
            puts @a.inject(:+)
        end
    
        def run
            datainput
            dataoutput
        end
end

if $0 == __FILE__
    FindTotalValue2.new.run
end