#include <cstdio>
#include <iostream>
#include <string>
#include <sstream>
#include <stack>
#include <algorithm>
#include <cmath>
#include <queue>
#include <map>
#include <set>
#include <cstdlib>
#include <bitset>
#include <tuple>
#include <assert.h>
#include <deque>
#include <bitset>
#include <iomanip>
#include <limits>
#include <chrono>
#include <random>
#include <array>
#include <unordered_map>
#include <functional>
#include <complex>

template<class T> inline bool chmax(T& a, T b) { if (a < b) { a = b; return 1; } return 0; }
template<class T> inline bool chmin(T& a, T b) { if (a > b) { a = b; return 1; } return 0; }

const long long MAX = 5100000;
const long long INF = 1LL << 60;
const long long mod = 1000000007LL;
//const long long mod = 998244353LL;

using namespace std;
typedef unsigned long long ull;
typedef long long ll;

ll N, L, R;
vector<ll> A;
vector<vector<int>> can;
ll mx = 63;
ll calc(ll X) {
	vector<vector<ll>> dp(mx + 1, vector<ll>(2));
	dp[mx][1] = 1;
	for (ll i = mx - 1; i >= 0; i--) {
		ll r = ((X >> i) & 1);
		if (r == 1) {
			dp[i][1] += dp[i + 1][1] * can[i][1];
			dp[i][0] += dp[i + 1][1] * can[i][0];
			dp[i][0] += dp[i + 1][0] * can[i][1];
			dp[i][0] += dp[i + 1][0] * can[i][0];
		}
		else {
			dp[i][1] += dp[i + 1][1] * can[i][0];
			dp[i][0] += dp[i + 1][0] * can[i][1];
			dp[i][0] += dp[i + 1][0] * can[i][0];
		}
		//cout << i << " " << dp[i][1] << " " << dp[i][0] << endl;
	}
	return dp[0][0] + dp[0][1];
}
int main()
{
	/*
	cin.tie(nullptr);
	ios::sync_with_stdio(false);
	*/
	scanf("%lld %lld %lld", &N, &L, &R);
	A.resize(N); for (ll i = 0; i < N; i++) scanf("%lld", &A[i]);
	can = vector<vector<int>>(mx + 1, vector<int>(2, 1));
	for (ll i = 0; i < N - 1; i++) {
		for (ll j = mx - 1; j >= 0; j--) {
			ll s = (A[i] >> j) & 1;
			ll t = (A[i + 1] >> j) & 1;
			if (s == 0 && t == 1) {
				can[j][1] = 0;
				break;
			}
			if (s == 1 && t == 0) {
				can[j][0] = 0;
				break;
			}
		}
	}
	ll res = calc(R);
	if (L) res -= calc(L - 1);
	cout << res << endl;
	return 0;
}