#include<iostream>
using namespace std;
int main(){
    int x,N;
    int a[100];
    long long product,ans = 0;
    cin >> x >> N;
    for(int i=0;i<N;i++){
        cin >> a[i];
        a[i] %= 1000002;
    }
    for(int i=0;i<N;i++){
        product = 1;
        for(int j=0;j<a[i];j++){
            product *= x;
            product %= 1000003;
        }
        ans += product;
        ans %= 1000003;
    }
    cout << ans << endl;
    return 0;
}