#include <bits/stdc++.h>
#pragma GCC diagnostic ignored "-Wsign-compare"
#pragma GCC diagnostic ignored "-Wsign-conversion"
#define NDEBUG
#define SHOW(...) static_cast<void>(0)
//!===========================================================!//
//!  dP     dP                          dP                    !//
//!  88     88                          88                    !//
//!  88aaaaa88a .d8888b. .d8888b. .d888b88 .d8888b. 88d888b.  !//
//!  88     88  88ooood8 88'  '88 88'  '88 88ooood8 88'  '88  !//
//!  88     88  88.  ... 88.  .88 88.  .88 88.  ... 88        !//
//!  dP     dP  '88888P' '88888P8 '88888P8 '88888P' dP        !//
//!===========================================================!//
using ld = long double;
using uint = unsigned int;
using ll = long long;
using ull = unsigned long long;
constexpr unsigned int MOD = 1000000007;
template <typename T>
constexpr T INF = std::numeric_limits<T>::max() / 4;
template <typename F>
constexpr F PI = static_cast<F>(3.1415926535897932385);
std::mt19937 mt{std::random_device{}()};
template <typename T>
bool chmin(T& a, const T& b) { return a = std::min(a, b), a == b; }
template <typename T>
bool chmax(T& a, const T& b) { return a = std::max(a, b), a == b; }
template <typename T>
std::vector<T> Vec(const std::size_t n, T v) { return std::vector<T>(n, v); }
template <class... Args>
auto Vec(const std::size_t n, Args... args) { return std::vector<decltype(Vec(args...))>(n, Vec(args...)); }
template <typename T>
constexpr T popCount(const T u)
{
#ifdef __has_builtin
    return u == 0 ? T(0) : (T)__builtin_popcountll(u);
#else
    unsigned long long v = static_cast<unsigned long long>(u);
    return v = (v & 0x5555555555555555ULL) + (v >> 1 & 0x5555555555555555ULL), v = (v & 0x3333333333333333ULL) + (v >> 2 & 0x3333333333333333ULL), v = (v + (v >> 4)) & 0x0F0F0F0F0F0F0F0FULL, static_cast<T>(v * 0x0101010101010101ULL >> 56 & 0x7f);
#endif
}
template <typename T>
constexpr T log2p1(const T u)
{
#ifdef __has_builtin
    return u == 0 ? T(0) : T(64 - __builtin_clzll(u));
#else
    unsigned long long v = static_cast<unsigned long long>(u);
    return v = static_cast<unsigned long long>(v), v |= (v >> 1), v |= (v >> 2), v |= (v >> 4), v |= (v >> 8), v |= (v >> 16), v |= (v >> 32), popCount(v);
#endif
}
template <typename T>
constexpr T clog(const T v) { return v == 0 ? T(0) : log2p1(v - 1); }
template <typename T>
constexpr T msbp1(const T v) { return log2p1(v); }
template <typename T>
constexpr T lsbp1(const T v)
{
#ifdef __has_builtin
    return __builtin_ffsll(v);
#else
    return v == 0 ? T(0) : popCount((v & (-v)) - T(1)) + T(1);
#endif
}
template <typename T>
constexpr bool ispow2(const T v) { return popCount(v) == 1; }
template <typename T>
constexpr T ceil2(const T v) { return v == 0 ? T(1) : T(1) << log2p1(v - 1); }
template <typename T>
constexpr T floor2(const T v) { return v == 0 ? T(0) : T(1) << (log2p1(v) - 1); }
//!===============================================================!//
//!   88888888b            dP       .88888.   a88888b. 888888ba   !//
//!   88                   88      d8'   '88 d8'   '88 88    '8b  !//
//!  a88aaaa    dP.  .dP d8888P    88        88        88     88  !//
//!   88         '8bd8'    88      88   YP88 88        88     88  !//
//!   88         .d88b.    88      Y8.   .88 Y8.   .88 88    .8P  !//
//!   88888888P dP'  'dP   dP       '88888'   Y88888P' 8888888P   !//
//!===============================================================!//
template <typename T>
constexpr std::pair<T, T> extgcd(const T a, const T b)
{
    if (b == 0) { return std::pair<T, T>{1, 0}; }
    const auto p = extgcd(b, a % b);
    return {p.second, p.first - p.second * (a / b)};
}
template <typename T>
constexpr T inverse(const T a, const T mod) { return (mod + extgcd((mod + a % mod) % mod, mod).first % mod) % mod; }
//!====================================================================================!//
//!    .88888.   a88888b. 888888ba        d88b       dP         a88888b. 8888ba.88ba   !//
//!   d8'   '88 d8'   '88 88    '8b       8''8       88        d8'   '88 88  '8b  '8b  !//
//!   88        88        88     88       d8b        88        88        88   88   88  !//
//!   88   YP88 88        88     88     d8P'8b       88        88        88   88   88  !//
//!   Y8.   .88 Y8.   .88 88    .8P     d8' '8bP     88        Y8.   .88 88   88   88  !//
//!    '88888'   Y88888P' 8888888P      '888P''YP    88888888P  Y88888P' dP   dP   dP  !//
//!====================================================================================!//
template <typename T>
constexpr T gcd(const T a, const T b) { return (b != 0) ? gcd(b, a % b) : a; }
template <typename T>
constexpr T lcm(const T a, const T b) { return (a == 0 and b == 0) ? (T)0 : (a / gcd(a, b)) * b; }
//!============================================!//
//!    8888ba.88ba             oo              !//
//!    88  '8b  '8b                            !//
//!    88   88   88  .d8888b.  dP  88d888b.    !//
//!    88   88   88  88'  '88  88  88'  '88    !//
//!    88   88   88  88.  .88  88  88    88    !//
//!    dP   dP   dP  '88888P8  dP  dP    dP    !//
//!============================================!//
int main()
{
    int N;
    std::cin >> N;
    std::vector<int> A(N), B(N);
    for (int i = 0; i < N; i++) { std::cin >> A[i], A[i]--; }
    for (int i = 0; i < N; i++) { std::cin >> B[i], B[i]--; }
    std::vector<std::vector<int>> cycle1;
    std::vector<int> C1(N, -1), D1(N, -1);
    for (int i = 0; i < N; i++) {
        if (C1[i] != -1) { continue; }
        std::vector<int> c;
        for (int p = i, d = 0; C1[p] == -1; p = A[p], d++) { C1[p] = (int)cycle1.size(), D1[p] = d, c.push_back(p); }
        cycle1.push_back(c);
    }
    std::vector<std::vector<int>> cycle2;
    std::vector<int> C2(N, -1), D2(N, -1);
    for (int i = 0; i < N; i++) {
        if (C2[i] != -1) { continue; }
        std::vector<int> c;
        for (int p = i, d = 0; C2[p] == -1; p = B[p], d++) { C2[p] = (int)cycle2.size(), D2[p] = d, c.push_back(p); }
        cycle2.push_back(c);
    }
    std::map<ll, std::vector<ll>> ds;
    for (int i = 0; i < N; i++) {
        const ll c1 = C1[i], c2 = C2[i], d = D2[i] - D1[i];
        const ll S1 = cycle1[c1].size(), S2 = cycle2[c2].size(), G = gcd(S1, S2), D = ((d % G) + G) % G;
        (D2[i] += S2 - D) %= S2;
        const ll C = c1 * (N + 1) * (N + 1) + c2 * (N + 1) + D;
        using P = std::pair<ll, ll>;
        std::vector<P> mods;
        ll M1 = S1, V1 = D1[i], M2 = S2, V2 = D2[i];
        const auto p = extgcd(M1, M2);
        const ll S = lcm(S1, S2);
        const ll M = (S + ((M1 * p.first) * (V2 - V1) / (M1 * p.first + M2 * p.second) + V1) % S) % S;
        ds[C].push_back(M);
    }
    ll ans = 0;
    for (auto& p : ds) {
        const ll code = p.first, c1 = code / (N + 1) / (N + 1), c2 = (code / (N + 1)) % (N + 1), S1 = cycle1[c1].size(), S2 = cycle2[c2].size();
        const ll S = lcm(S1, S2);
        auto& v = p.second;
        std::sort(v.begin(), v.end());
        const int V = v.size();
        for (int i = 0; i < V; i++) {
            const ll dis = (i == V - 1 ? v[0] + S - v[i] - 1 : v[i + 1] - v[i] - 1) % MOD;
            (ans += ((dis) * (dis + 1)) / 2) %= MOD;
        }
    }
    std::cout << ans << std::endl;
    return 0;
}