import bisect
import copy
import decimal
import fractions
import heapq
import itertools
import math
import random
import sys
import time
from collections import Counter,deque,defaultdict
from functools import lru_cache,reduce
from heapq import heappush,heappop,heapify,heappushpop,_heappop_max,_heapify_max
def _heappush_max(heap,item):
    heap.append(item)
    heapq._siftdown_max(heap, 0, len(heap)-1)
def _heappushpop_max(heap, item):
    if heap and item < heap[0]:
        item, heap[0] = heap[0], item
        heapq._siftup_max(heap, 0)
    return item
from math import gcd as GCD
read=sys.stdin.read
readline=sys.stdin.readline
readlines=sys.stdin.readlines
write=sys.stdout.write

N,L,R=map(int,readline().split())
A=list(map(int,readline().split()))
X=[[1,1] for bit in range(61)]
for i in range(N-1):
    for bit in range(60,-1,-1):
        if A[i]&1<<bit!=A[i+1]&1<<bit:
            if A[i]&1<<bit:
                X[bit][0]=0
            else:
                X[bit][1]=0
            break
for bit in range(61):
    if not sum(X[bit]):
        ans=0
        break
else:
    def solve(N):
        bl=X[60][N>>60&1]
        dp=0
        for bit in range(60,-1,-1):
            dp*=sum(X[bit])
            if bl and X[bit][0] and N&1<<bit:
                dp+=1
            bl&=X[bit][N>>bit&1]
        return dp
    ans=solve(R+1)-solve(max(L,1))
    if L==0 and all(A[i]<A[i+1] for i in range(N-1)):
        ans+=1
print(ans)