import sys
readline=sys.stdin.readline

N,L,R=map(int,readline().split())
A=list(map(int,readline().split()))
bit_lst=[None for bit in range(62)]
for i in range(1,N):
    bit=(A[i-1]^A[i]).bit_length()-1
    if A[i-1]>>bit&1 and not A[i]>>bit&1:
        if bit_lst[bit]==0:
            print(0)
            exit()
        bit_lst[bit]=1
    elif not A[i-1]>>bit&1 and A[i]>>bit&1:
        if bit_lst[bit]==1:
            print(0)
            exit()
        bit_lst[bit]=0
def cnt(N):
    retu=0
    for bit in range(62):
        if N>>bit&1 and bit_lst[bit]!=1:
            for i in range(bit+1,62):
                if bit_lst[i]!=None and bit_lst[i]!=N>>i&1:
                    break
            else:
                retu+=pow(2,bit_lst[:bit].count(None))
    return retu
ans=cnt(R+1)-cnt(L)
print(ans)