import std.algorithm, std.array, std.container, std.range, std.bitmanip;
import std.numeric, std.math, std.bigint, std.random, core.bitop;
import std.string, std.regex, std.conv, std.stdio, std.typecons;

void main()
{
  auto n = readln.chomp.to!size_t;
  auto ai = readln.split.map!(to!long).array;

  size_t i = 0;
  foreach (j; 0..61) {
    if (i >= n) break;
    auto k = ai[i..$].countUntil!(a => (a & (1 << j)) != 0);
    if (k == -1) continue;
    swap(ai[i], ai[k + i]);
    foreach (l; i + 1..min(n, 61)) {
      if ((ai[l] & (1 << j)) != 0)
        ai[l] ^= ai[i];
    }
    i += 1;
  }

  auto r = ai.count!(a => a != 0);
  writeln(2 ^^ r);
}