#include <bits/stdc++.h>
#include <vector>
using namespace std;

int main(){
    int x,n;
    scanf("%d %d",&x,&n);
    int a[n];
    int mod[1000002];//x^i mod 1000003
    for(int i=0;i<n;i++){
        scanf("%d",&a[i]);
        a[i] = a[i] % 1000002;
    }
    mod[0] = 1;
    for(int i=0;i<1000002;i++){
        mod[i+1] = (mod[i] * x) % 1000003;
    }
    int ans = 0;
    for(int i=0;i<n;i++){
        ans = (ans + mod[a[i]]) % 1000003;
    }
    printf("%d",ans);
}