#include <bits/stdc++.h>
using namespace std;

const int N = 1e5 + 7;

int p[N], n, bit[N];
std::pair<int, int> a[N], b[N];

void add(int x) {
  while(x) {
    ++bit[x];
    x -= x & -x;
  }
}

int ask(int x) {
  int ret = 0;
  while(x <= n) {
    ret += bit[x];
    x += x & -x;
  }
  return ret;
}

int main() {

  scanf("%d", &n);
  for(int i = 0, pre = 0, x; i < n; ++i) {
    scanf("%d", &x);
    a[i] = {x ^ pre, i};
    pre = x;
  }
  for(int i = 0, pre = 0, x; i < n; ++i) {
    scanf("%d", &x);
    b[i] = {x ^ pre, i};
    pre = x;
  }

  std::sort(a + 1, a + n);
  std::sort(b + 1, b + n);

  for(int i = 0; i < n; ++i) {
    if(a[i].first != b[i].first) {
      puts("-1");
      return 0;
    }
    p[a[i].second] = b[i].second;
  }

  long long ans = 0;
  for(int i = 1; i < n; ++i) {
    ans += ask(p[i]);
    add(p[i]);
  }

  printf("%lld\n", ans);

  return 0;
}