#include <iostream>
#include <vector>
#include <map>
#include <set>
#include <queue>
#include <string>
#include <iomanip>
#include <algorithm>
#include <cmath>
#include <stdio.h>
using namespace std;
#define int long long
int MOD = 1000000007;
using lll = long long;
std::pair<lll, lll> crt(lll a1, lll m1, lll a2, lll m2) {
	auto normal = [](lll x, lll m) { return x >= -x ? x % m : m - (-x) % m; };
	auto modmul = [&normal](lll a, lll b, lll m) { return normal(a, m) * normal(b, m) % m; };
	auto extgcd = [](lll a, lll b, lll &x, lll &y) {
		for (lll u = y = 1, v = x = 0; a;) {
			lll q = b / a;
			std::swap(x -= q * u, u);
			std::swap(y -= q * v, v);
			std::swap(b -= q * a, a);
		}
		return b;
	};
	lll k1, k2;
	lll g = extgcd(m1, m2, k1, k2);
	if (normal(a1, g) != normal(a2, g))
		return std::make_pair(-1, -1);
	else {
		lll l = m1 / g * m2;
		lll x = a1 + modmul(modmul((a2 - a1) / g, k1, l), m1, l);
		return std::make_pair(x, l);
	}
}
std::pair<lll, lll> crt(std::vector<lll> a, std::vector<lll> m) {
	lll mod = 1, ans = 0;
	int n = a.size();
	for (int i = 0; i < n; i++) {
		std::tie(ans, mod) = crt(ans, mod, a[i], m[i]);
		if (ans == -1) return std::make_pair(-1, -1);
	}
	return std::make_pair(ans, mod);
}
int gcd(int a, int b)
{
	int c;
	while (a != 0) {
		c = a; a = b%a;  b = c;
	}
	return b;
}
int f(int a) {
	if (a <= 0) {
		return 0;
	}
	return a*(a - 1) / 2;
}
signed main() {
	cin.tie(0);
	ios::sync_with_stdio(false);
	int N;
	cin >> N;
	
	vector<int> A(N);
	vector<int> B(N);
	vector<int> nA(N, -1);
	vector<int> nB(N, -1);
	vector<int> indA(N);
	vector<int> indB(N);

	vector<int> szA;	
	vector<int> szB;
	int res = 0;
	for (int i = 0; i < N; i++) {
		cin >> A[i];
		A[i]--;
	}
	for (int i = 0; i < N; i++) {
		cin >> B[i];
		B[i]--;
	}
	int t;
	int c = 0;
	int cc = 0;
	for (int i = 0; i < N; i++) {
		if (nA[i] == -1) {
			cc = 0;
			t = i;
			while (true) {
				nA[t] = c;
				indA[t] = cc;
				cc++;
				t = A[t];
				if (i == t)break;
			}
			szA.push_back(cc);
			c++;
		}
	}
	c = 0;
	for (int i = 0; i < N; i++) {
		if (nB[i] == -1) {
			cc = 0;
			t = i;
			while (true) {
				nB[t] = c;
				indB[t] = cc;
				cc++;
				t = B[t];
				if (i == t)break;
			}
			szB.push_back(cc);
			c++;
		}
	}
	
	map<pair<pair<int, int>, int >, vector<int> > mp;
	map<pair<pair<int, int>, int >, int > mp2;
	int g;
	int k;
	pair<pair<int, int>, int > pp;
	for (int i = 0; i < N; i++) {
		//cerr << nA[i] << " " << nB[i] << " " << indA[i] << " " << indB[i] << endl;
		g = gcd(szA[nA[i]], szB[nB[i]]);
		k = (indB[i] - indA[i] + g * 1000000) % g;
		pp.first.first = nA[i];
		pp.first.second = nB[i];
		pp.second = k;
		mp2[pp] = (szA[nA[i]] / g) * (szB[nB[i]]);
		mp[pp].push_back(crt(indA[i], szA[nA[i]], (indB[i] - k + szB[nB[i]]) % szB[nB[i]], szB[nB[i]]).first);
	}
	int sz;
	for (auto m : mp) {
		sz = mp2[m.first];
		sort(m.second.begin(), m.second.end());
		/*for (int i = 0; i < (int)m.second.size(); i++) {
			cerr << m.second[i] << " ";
		}
		cerr << endl;*/
		for (int i = 0; i < (int)m.second.size() - 1; i++) {
	
			res = (res + f(m.second[i + 1] - m.second[i])) % MOD;
		}
		res = (res + f(sz + m.second[0] - m.second.back())) % MOD;
	}
	cout << res << endl;
}