from math import log10
# import sys
# sys.setrecursionlimit(100000)
x, N = map(int, input().split())
a = list(map(int, input().split()))
xp = 0
n = 1000003
j = 0


def keta(x, a):
    ketasuu = int(a * log10(x)) + 1
    return ketasuu


def amari(x, a, n):
    if keta(x, a) <= 14:
        return (x ** a) % n
    else:
        makexp(x, n)
        result = 0
        r = a // xp
        result = (x ** (a % xp)) * amari(j, r, n)
        result = result % n
        return result


def makexp(x, n):
    global xp
    global j
    if x > 1:
        i = 0
        while(True):
            if x ** i > n:
                xp = i
                j = x ** i - n
                return None
                break
            i += 1


shiguma = 0
for i in range(N):
    shiguma += amari(x, a[i], n)
    shiguma = shiguma % n

print(shiguma)