n,L,R = map(int,input().split())
*a, = map(int,input().split())
res = [3]*62
q = [a]
for i in range(62)[::-1]:
    #print(q)
    nq = []
    c = 3
    for lst in q:
        q0 = []
        q1 = []
        for x in lst:
            if x>>i&1:
                q1.append(x)
                if q0: c &= 1
            else:
                q0.append(x)
                if q1: c &= 2
        if len(q0) >= 2: nq.append(q0)
        if len(q1) >= 2: nq.append(q1)
    res[i] = c
    q = nq

d = {}
def f(x,i):
    if (x,i) in d:
        return d[x,i]
    if x < 0: return 0
    if i==62: return 1
    c = 0
    if res[i]&1:
        c += f(x//2,i+1)
    if res[i]&2:
        c += f((x-1)//2,i+1)
    d[x,i] = c
    return c

p = f(R,0)
q = f(L-1,0)
print(p-q)