#include <iostream>
#include <vector>
#include <string>
#include <cstring>
#include <math.h>
#include <cmath>
#include <limits.h>
#include <map>
#include <set>
#include <queue>
#include <algorithm>
#include <functional>
#include <stdio.h>
using namespace std;

long long MOD = 1000003;

long long M[1000003];

int main() {
        
    
    int x,N;
    cin >> x >> N;
    
    vector<long long> A(N);
    for ( int i = 0; i < N; i++ ) {
        cin >> A[i];
    }
    
    M[0] = 1;
    long long a = 1;
    for ( int i = 1; i < 1000003; i++ ) {
        a *= x;
        a %= MOD;
        M[i] = a;
    }
    
    long long ans = 0;
    for ( int i = 0; i < N; i++ ) {
        ans += ( A[i] >= MOD ) ? M[ 1 + A[i]%MOD ] : M[A[i]];
        ans %= MOD;
    }
    
    cout << ans << endl;
    
    return 0;
}