class Fixnum
  def power(x)
    result = 1
    n = self

    while x > 0
      result = (result * n) % 1_000_003 if (x & 1).nonzero?

      n = (n * n) % 1_000_003
      x >>= 1
    end

    result
  end
end

class Yukicoder
  EPS = 1_000_003

  def initialize
    x, n = gets.chomp.split(' ').map(&:to_i)
    a = gets.chomp.split(' ').map(&:to_i)

    puts a.map{|i| x.power(i)}.inject(:+) % EPS
  end
end

Yukicoder.new