const MOD: usize = 1_000_003;

fn mpow(x: usize, n: usize) -> usize {
	if n == 0 { 1 }
	else if n % 2 == 0 { mpow(x * x % MOD, n / 2) }
	else { mpow(x * x % MOD, n / 2) * x % MOD }
}

fn main() {
	let mut s = String::new();
	std::io::stdin().read_line(&mut s).ok();
	let mut s = s.trim().split_whitespace();
	let x: usize = s.next().unwrap().parse().unwrap();
	let mut a = String::new();
	std::io::stdin().read_line(&mut a).ok();
	let a: Vec<usize> = a.trim().split_whitespace()
		.map(|e| e.parse().unwrap()).collect();

	let mut ans: usize = 0;
	for i in a { ans += mpow(x, i); }

	println!("{}", ans);
}