#include <vector>
#include "iostream"
#include "algorithm"
using namespace std;

int main() {
    long long unsigned int x,n,a;
    vector<int> q;
    long long unsigned int ans = 0;
    cin>>x>>n;
    while (n--) {
        cin>>a;
        long long unsigned int b=x % 1000003;
        long long unsigned int c=1;
        while (a > 0) {
            if (a%2==1) {
                c *= b;
                c %= 1000003;
            }
            b = b * b % 1000003;
            a = a>>1;
        }

        ans += c;
    }
    ans %= 1000003;
    cout<< ans << endl;

    return 0;
}