x, n = [int(s) for s in input().split()]
a = [int(s) for s in input().split()]
mod = 1000003

big = 100000
xx = [0] * (big + 1)
xx[0] = 1
for e in range(1, big + 1):
    xx[e] = xx[e - 1] * x % mod
res = 0
for ai in a:
    if ai > big:
        prod = 1
        for e in range(ai // big):
            prod = prod * xx[big] % mod
        for e in range(ai % big):
            prod = prod * x % mod
        res = (res + prod) % mod
    else:
        res = (res + xx[ai]) % mod

print(res)