using System;

class Program
{
  Scanner cin;

  int N;
  long L, R;
  long[] A;

  int[] ok;


  long T;
  long[,] dp;

  long rec(int idx, int high)
  {
    if(idx == -1)
    {
      return 1;
    }
    if(dp[idx, high] != -1)
    {
      return dp[idx, high];
    }
    long ret = 0;
    for (int i = 0; i <= (high == 1 ? ((T >> idx) & 1) : 1); i++)
    {

      if (((ok[idx] >> i) & 1) == 0)
      {
        continue;
      }
      ret += rec(idx - 1, high & (((T >> idx) & 1) == i ? 1 : 0));
    }
    dp[idx, high] = ret;
    return ret;
  }

  long beet(long S)
  {
    if (S < 0) return 0;
    dp = new long[61, 2];
    for (int i = 0; i < 61; i++)
    {
      for (int j = 0; j < 2; j++)
      {
        dp[i, j] = -1;
      }
    }
    T = S;
    return rec(60, 1);
  }

  void myon()
  {
    cin = new Scanner();

    N = cin.nextInt();
    L = cin.nextLong();
    R = cin.nextLong();

    A = new long[N];
    for(int i = 0; i < N; i++)
    {
      A[i] = cin.nextLong();
    }


    ok = new int[61];
    long mask = 0, mask2 = 0;
    for (int i = 60; i >= 0; i--)
    {
      mask2 |= 1L << i;

      for (int j = 0; j < 2; j++)
      {
        long next = mask | ((long)j << i);
        long pre = -1;

        for (int k = 0; k < N; k++)
        {
          long cur = (next ^ A[k]) & mask2;
          if (cur < pre)
          {
            pre = -1;
            break;
          }
          pre = cur;
        }
        if (pre != -1)
        {
          ok[i] |= 1 << j;
        }
      }

      if (((ok[i] >> 0) & 1) == 0)
      {
        mask |= 1L << i;
      }
    }
    Console.WriteLine(beet(R) - beet(L - 1));
  }

  static void Main(string[] args)
  {
    new Program().myon();
  }
}

class Scanner
{
  string[] s;
  int i;
  readonly char[] cs = new char[] { ' ' };

  public Scanner()
  {
    s = new string[0];
    i = 0;
  }

  public string next()
  {
    if (i < s.Length) return s[i++];
    string st = Console.ReadLine();
    while (st == "") st = Console.ReadLine();
    s = st.Split(cs, StringSplitOptions.RemoveEmptyEntries);
    if (s.Length == 0) return next();
    i = 0;
    return s[i++];
  }

  public string nextLine()
  {
    return Console.ReadLine();
  }

  public int nextInt()
  {
    return int.Parse(next());
  }

  public long nextLong()
  {
    return long.Parse(next());
  }

  public double nextDouble()
  {
    return double.Parse(next());
  }
}