x, n = list(map(int, input().split(' ')))
an = list(map(int, input().split(' ')))

M = 1000003

def calc(n):
    if n == 0:
        return 1
    elif n % 2 == 1:
        return calc(n - 1) * x % M
    else:
        t = calc(n // 2)
        return t * t % M

result = 0
for a in an:
    result += calc(a)
    result %= M

print(result)