x, a= [ int(v) for v in input().split() ]

powlist = sorted([ int(v) for v in input().split() ])

mod = 1000003


def russian_cal(x,n):
	mullist = []
	if n % 2 == 1:
		mullist.append(x)
	while n != 1:
		n //= 2
		x  = (x*x)%mod
		if n % 2 == 1:
			mullist.append(x)

	p = 1
	for i in mullist:
		p = (p*i)%mod
	return p
		

s = 0
for i in powlist:
	s += (russian_cal(x,i)%mod)

print(s%mod)