x,N = map(int,raw_input().split())
a = map(int,raw_input().split())
k = [0 for i in xrange(max(a) + 1)]
k[0] = 1
for i in xrange(1,len(k)):
	k[i] = k[i - 1] * x
ans = 0
for i in range(N):
	ans += k[a[i]]
	ans %= 1000003
print ans