import math, sequtils, strutils

const m = 1_000_003

proc powMod(x, y: int): int =
  if y == 0:
    1
  elif y mod 2 == 1:
    x * powMod(x, y.pred) mod m
  else:
    let v = powMod(x, y div 2)
    (v * v) mod m

let
  xn = stdin.readLine.split.map parseInt
  x = xn[0]
  a = stdin.readLine.split.map parseInt
  ans = a.mapIt(powMod(x, it)).sum
echo ans mod m