import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.Arrays;

public class Main {
	public static void main(String[] args) throws Exception {
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		String[] sa = br.readLine().split(" ");
		int n = Integer.parseInt(sa[0]);
		long l = Long.parseLong(sa[1]) - 1;
		long r = Long.parseLong(sa[2]);
		sa = br.readLine().split(" ");
		long[] a = new long[n];
		for (int i = 0; i < n; i++) {
			a[i] = Long.parseLong(sa[i]);
		}
		br.close();

		int[] dp = new int[62];
		Arrays.fill(dp, 2);
		for (int i = 1; i < n; i++) {
			for (int j = 61; j >= 0; j--) {
				long x = a[i - 1] >> j & 1;
				long y = a[i] >> j & 1;
				if (x > y) {
					if (dp[j] == 0) {
						System.out.println(0);
						return;
					}
					dp[j] = 1;
					break;
				}
				if (x < y) {
					if (dp[j] == 1) {
						System.out.println(0);
						return;
					}
					dp[j] = 0;
					break;
				}
			}
		}

		long[][] bdp1 = bdp(dp, r);
		long[][] bdp2 = bdp(dp, l);
		System.out.println(bdp1[0][0] + bdp1[0][1] - bdp2[0][0] - bdp2[0][1]);
	}

	static long[][] bdp(int[] dp, long r) {
		long[][] bdp = new long[62][2];
		if (r < 0) {
			return bdp;
		}
		bdp[61][0] = 1;
		for (int j = 60; j >= 0; j--) {
			bdp[j][1] = bdp[j + 1][1];
			if (dp[j] == 0) {
				if ((r >> j & 1) == 0) {
					bdp[j][0] = bdp[j + 1][0];
				} else {
					bdp[j][1] += bdp[j + 1][0];
				}
			} else if (dp[j] == 1) {
				if ((r >> j & 1) == 1) {
					bdp[j][0] = bdp[j + 1][0];
				}
			} else {
				bdp[j][1] += bdp[j + 1][1];
				bdp[j][0] = bdp[j + 1][0];
				if ((r >> j & 1) == 1) {
					bdp[j][1] += bdp[j + 1][0];
				}
			}
		}
		return bdp;
	}
}