#include <iostream>
using namespace std;

#define SIZE 100
#define MOD 1000003

int calcPowMod(int x, int n, int mod);

int main (void)
{
  int i, x, N = 0;
  int a[SIZE];
  unsigned long ans = 0;

  cin >> x >> N;

  for ( i = 0; i < N; i++ ) { cin >> a[i]; }
  for ( i = 0; i < N; i++ )
  {
    ans += calcPowMod(x, a[i], MOD);
    ans %= MOD;
  }
  cout << ans << endl;
}

int calcPowMod(int x, int n, int mod)
{
  unsigned long sum;
  if ( n == 0 ) { return 1; }
  if ( n == 1 ) { return x % mod; }
  sum = calcPowMod(x, n/2, mod);
  return n%2 == 0 ? (sum * sum) % mod : (x * sum * sum) % mod;
}