import std.algorithm, std.conv, std.range, std.stdio, std.string;

const md = 1_000_003L;

void main()
{
  auto rd = readln.split, x = rd[0].to!long, n = rd[1].to!size_t;
  auto ai = readln.split.to!(long[]);

  auto maxA = ai.reduce!max;
  auto xi = new long[](maxA + 1);
  xi[0] = 1;
  foreach (i; maxA.iota)
    xi[i + 1] = (xi[i] * x) % md;

  auto r = ai.map!(a => xi[a]).sum % md;
  writeln(r);
}