import sys

MOD=10**9+7

class BIT():
    def __init__(self,n):
        self.n=n
        self.a=[0]*(n+1)

    def add(self,k,v):
        while k<=self.n:
            self.a[k]+=v
            k+=k&-k

    def sum(self,k):
        ret=0
        while k>0:
            ret+=self.a[k]
            k-=k&-k
        return ret

N=int(input())
A=list(map(int,input().split()))+[0]
B=list(map(int,input().split()))+[0]
A=[A[i+1]^A[i] for i in range(0,N)]
B=[B[i+1]^B[i] for i in range(0,N)]
bit=BIT(N)
m=dict()
for b in B:
    m[b]=[]
for i,b in enumerate(B):
    m[b].append(i)
ans=0
for i in range(N-1,-1,-1):
    a=A[i]
    if a not in m or len(m[a])==0:
        exit(print(-1))
    p=m[a][-1]+1
    ans+=bit.sum(p)
    bit.add(p,1)
    m[a].pop()
print(ans)