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


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


def amari(x, a, n):
    global xp
    if keta(x, a) <= 9:
        return (x ** a) % n
    else:
        result = 0
        r = a // xp
        result = amari(j, r, n) * (x ** (a % xp) % n) % n
        return result


if x > 1:
    i = 0
    while(True):
        if x ** i > n:
            xp = i
            j = (x ** i) % n
            break
        i += 1

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

print(shiguma)