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

xx = [0] * 100000001
xx[0] = 1
for e in range(1, 1000000 + 1):
    xx[e] = xx[e - 1] * x % mod
res = 0
for ai in a:
    if xx[ai] == 0:
        d = ai // 1000000 * 1000000
        for e in range(1, ai // 1000000 + 1):
            xx[(e + 1) * 1000000] = xx[e * 1000000] * xx[1000000] % mod
        for e in range(1, ai % 1000000 + 1):
            xx[d + e] = xx[d + e - 1] * x % mod
    res = (res + xx[ai]) % mod

print(res)