import itertools

x, a = map(int, input().split())
inpls = list(map(int,input().split()))

def rem(x,n,d=1000003):
    if n == 0:
        return 1
    else:
        ls = [2**i for i in range(0,20)]
        smls = []
        smid = []
        for i in range(1,21):
            for j in itertools.combinations(ls,i):
                sm = sum(j)
                if sm == n:
                    smls.append(sm)
                    smid.append(j)

        rm = 1
        for i in list(smid[0]):
            r = x**i%d
            rm *= r
        return rm%d

sm = 0
for i in inpls:
    sm += rem(x,i)

print(sm%d)