#include "bits/stdc++.h"
using namespace std;

typedef long long Int;
#define REP(i,n) for(int (i)=0;(i)<(int)(n);++(i))

const Int MOD = 1000003;

long pow_mod(Int a, Int n, Int MOD) {
	Int res = 1;
	while (n > 0) {
		if (n & 1) {
			res *= a;
			res %= MOD;
		}
		a = a * a % MOD;
		n >>= 1;
	}
	return res;
}

int a[100];
int main() {
	Int x;
	int N;
	cin >> x >> N;
	REP(i, N) cin >> a[i];

	Int ans = 0;
	REP(i, N) {
		ans += pow_mod(x, a[i], MOD);
		ans %= MOD;
	}
	cout << ans << endl;

}