N,L,R = map(int,input().split())
A = list(map(int,input().split()))
C = 61
x = [-1] * C
import sys
if N == 1:
    print(R - L + 1)
    exit()
    
for i in range(N - 1):
    for j in reversed(range(C)):
        mask = 1 << j
        if A[i] & mask == A[i + 1] & mask:
            continue
        if A[i] & mask == 0:
            if x[j] == 1:
                print(0)
                exit()
            x[j] = 0
        else:
            if x[j] == 0:
                print(0)
                exit()
            x[j] = 1
        break
def calc(S):
    if S == -1:
        return 0
    dp = [0] * C
    mask = 1 << (C - 1)
    if S & mask:
        if x[-1] == 1:
            same = 1
            dp[-1] = 0
        elif x[-1] == 0:
            same = 0
            dp[-1] = 1
        else:
            same = 1
            dp[-1] = 1
    else:
        if x[-1] == 1:
            return 0
        elif x[-1] == 0:
            same = 1
            dp[-1] = 0
        else:
            same = 1
            dp[-1] = 0
            
    for j in reversed(range(C - 1)):
        mask = 1 << j
        if S & mask:
            if x[j] == 1:
                dp[j] = dp[j+1]
            elif x[j] == 0:
                dp[j] = dp[j+1] + same
                same = 0
            else:
                dp[j] = dp[j+1] * 2 + same
        else:
            if x[j] == 1:
                dp[j] = dp[j+1]
                same = 0
            elif x[j] == 0:
                dp[j] = dp[j+1]
            else:
                dp[j] = dp[j+1] * 2
    return dp[0] + same
print(calc(R) - calc(L -1))