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

xx = [0] * 1000001
xx[0] = 1
for e in range(1, 1000000 + 1):
    xx[e] = xx[e - 1] * x % mod
res = 0
for ai in a:
    if ai > 1000000:
        prod = xx[1000000]
        d = ai // 1000000 * 1000000
        for e in range(1, ai // 1000000 + 1):
            prod = prod * xx[1000000] % mod
        for e in range(1, ai % 1000000 + 1):
            prod = prod * x % mod
        res = (res + prod) % mod
    else:
        res = (res + xx[ai]) % mod

print(res)