#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 func( int a, int b, long long p ) {
    if ( b == 0 ) {
        return 1;
    }
    else if ( b%2 == 0 ) {
        long long temp = func( a, b/2, p );
        return (temp * temp)%p;
    }
    else {
        return ( func( a, b-1, p ) * a ) % p;
    }
    
}

int main() {
    
    long long x,N;
    cin >> x >> N;
    
    vector<long long> A(N);
    for ( int i = 0; i < N; i++ ) {
        cin >> A[i];
    }
    
    long long ans = 0;
    for ( int i = 0; i < N; i++ ) {
        ans += func( x, A[i], MOD );
        ans %= MOD;
    }
    
    cout << ans << endl;
}