# frozen_string_literal: true

def solve
  a_max = A.max
  xas = Array.new(a_max + 1, 1)
  (1..a_max).each do |i|
    xas[i] = (xas[i - 1] * X) % L
  end
  A.map { xas[_1] }.sum % L
end

L = 10**6 + 3

X, N = gets.chomp.split.map(&:to_i)
A = gets.chomp.split.map(&:to_i)

puts solve