using System;
using System.Linq;

class A
{
	const long M = 998244353;
	static int[] Read() => Array.ConvertAll(Console.ReadLine().Split(), int.Parse);
	static (int, int, int, int) Read4() { var a = Read(); return (a[0], a[1], a[2], a[3]); }
	static void Main()
	{
		var (n, k, x, y) = Read4();
		var a = Read();

		a = a.Distinct().ToArray();
		Array.Sort(a);
		k = a.Length;

		var c = NewArray2<long>(1 << 10, 1 << 10);
		var countsByXor = new long[1 << 10];
		var rn1 = Enumerable.Range(0, n / 2 - 1).ToArray();

		Power(a, n / 2, p =>
		{
			if (rn1.Any(i => p[i] == p[i + 1])) return;
			var xor = p.Aggregate((x, y) => x ^ y);
			c[p[0]][xor]++;
			countsByXor[xor]++;
		});

		var r = 0L;
		for (int i = 0; i < 1 << 10; i++)
			for (int j = 0; j < 1 << 10; j++)
			{
				if ((i ^ j) < x || y < (i ^ j)) continue;

				r += countsByXor[i] * countsByXor[j];
				r %= M;

				for (int a0 = 0; a0 < 1 << 10; a0++)
				{
					r -= c[a0][i] * c[a0][j];
					r = (r + M) % M;
				}
			}
		Console.WriteLine(r);
	}

	static T[][] NewArray2<T>(int n1, int n2, T v = default) => Array.ConvertAll(new bool[n1], _ => Array.ConvertAll(new bool[n2], __ => v));

	static void Power<T>(T[] values, int r, Action<T[]> action)
	{
		var n = values.Length;
		var p = new T[r];

		if (r > 0) Dfs(0);
		else action(p);

		void Dfs(int i)
		{
			var i2 = i + 1;
			for (int j = 0; j < n; ++j)
			{
				p[i] = values[j];

				if (i2 < r) Dfs(i2);
				else action(p);
			}
		}
	}
}