#include <iostream>
using namespace std;
template <typename T>
T bPM(T z,T n, T mod){
  T ans = 1;
  while(n != 0){
    if(n%2){
      ans*=z;
      if(mod)ans%=mod;
    }
    n >>= 1;
    z*=z;
    if(mod)z%=mod;
  }
  return ans;
}
int main(){
    long long n,m;cin>>n>>m;
    long long ans = 0;
    for(int i = 0; m > i; i++){
        long long t;cin>>t;
        ans = (ans+bPM(n,t,1000003LL))%1000003LL;
    }
    cout << ans << endl;
}