
#include <bits/stdc++.h>

using namespace std;

#define int long long
// #define double long double
#define FOR(i, a, b) for(int i = (a); i < (b); ++i)
#define FORR(i, a, b) for(int i = (a); i > (b); --i)
#define REP(i, n) for(int i = 0; i < (n); ++i)
#define REPR(i, n) for(int i = n; i >= 0; i--)
#define FOREACH(x, a) for(auto &(x) : (a))
#define VECCIN(x)                                                              \
    for(auto &youso_ : (x)) cin >> youso_
#define bitcnt(x) __builtin_popcount(x)
#define lbit(x) __builtin_ffsll(x)
#define rbit(x) (64 - __builtin_clzll(x))
#define fi first
#define se second
#define All(a) (a).begin(), (a).end()
#define rAll(a) (a).rbegin(), (a).rend()
#define cinfast() cin.tie(0), ios::sync_with_stdio(false)
#define precise(x) cout << fixed << setprecision(x)
#define PERM(c)                                                                \
    sort(All(c));                                                              \
    for(bool cp = true; cp; cp = next_permutation(All(c)))
#define COMB(n, k)                                                             \
    for(ll bit = (1LL << k) - 1; bit < (1LL << n); bit = next_combination(bit))
#define PERM2(n, k)                                                            \
    COMB(n, k) {                                                               \
        vector<int> sel;                                                       \
        for(int bitindex = 0; bitindex < n; bitindex++)                        \
            if(bit >> bitindex & 1) sel.emplace_back(bitindex);                \
        PERM(sel) { Printv(sel); }                                             \
    }
#define MKORDER(n)                                                             \
    vector<int> od(n);                                                         \
    iota(All(od), 0LL);

template <typename T = long long> inline T IN() {
    T x;
    cin >> x;
    return (x);
}
inline void CIN() {}
template <class Head, class... Tail>
inline void CIN(Head &&head, Tail &&... tail) {
    cin >> head;
    CIN(move(tail)...);
}
template <class Head> inline void COUT(Head &&head) { cout << (head) << "\n"; }
template <class Head, class... Tail>
inline void COUT(Head &&head, Tail &&... tail) {
    cout << (head) << " ";
    COUT(forward<Tail>(tail)...);
}

#define CCIN(...)                                                              \
    char __VA_ARGS__;                                                          \
    CIN(__VA_ARGS__)
#define DCIN(...)                                                              \
    double __VA_ARGS__;                                                        \
    CIN(__VA_ARGS__)
#define LCIN(...)                                                              \
    long long __VA_ARGS__;                                                     \
    CIN(__VA_ARGS__)
#define SCIN(...)                                                              \
    string __VA_ARGS__;                                                        \
    CIN(__VA_ARGS__)
#define Printv(v)                                                              \
    {                                                                          \
        REP(hoge, v.size())                                                    \
        cout << v[hoge] << (hoge == v.size() - 1 ? "" : " ");                  \
        cout << "\n";                                                          \
    }
template <typename T = string> inline void eputs(T s) {
    cout << s << "\n";
    exit(0);
}
template <typename A, size_t N, typename T>
void Fill(A (&array)[N], const T &val) {
    std::fill((T *)array, (T *)(array + N), val);
}

long long next_combination(long long sub) {
    long long x = sub & -sub, y = sub + x;
    return (((sub & ~y) / x) >> 1) | y;
}
template <class T> inline bool chmax(T &a, T b) {
    if(a < b) {
        a = b;
        return 1;
    }
    return 0;
}
template <class T> inline bool chmin(T &a, T b) {
    if(a > b) {
        a = b;
        return 1;
    }
    return 0;
}

// generic lambdas
template <typename F>
#if defined(__has_cpp_attribute) && __has_cpp_attribute(nodiscard)
[[nodiscard]]
#elif defined(__GNUC__) &&                                                     \
    (__GNUC__ > 3 || __GNUC__ == 3 && __GNUC_MINOR__ >= 4)
__attribute__((warn_unused_result))
#endif // defined(__has_cpp_attribute) && __has_cpp_attribute(nodiscard)
    static inline constexpr decltype(auto)
    fix(F &&f) noexcept {
    return [f = std::forward<F>(f)](auto &&... args) {
        return f(f, std::forward<decltype(args)>(args)...);
    };
}

template <typename T> using PQG = priority_queue<T, vector<T>, greater<T>>;
template <typename T> using PQ = priority_queue<T>;

typedef long long ll;
typedef vector<ll> VL;
typedef vector<VL> VVL;
typedef pair<ll, ll> PL;
typedef vector<PL> VPL;
typedef vector<bool> VB;
typedef vector<double> VD;
typedef vector<string> VS;

const int INF = 1e9;
const int MOD = 1e9 + 7;
// const int MOD = 998244353;
const ll LINF = 1e18;
const ll dw[] = {1, 1, 0, -1, -1, -1, 0, 1};
const ll dh[] = {0, 1, 1, 1, 0, -1, -1, -1};
#define PI 3.141592653589793230
#define EPS 1e-7

//うし木 0-indexed
template <typename T, typename E> struct SegmentTree {
    typedef function<T(T, T)> F;
    typedef function<T(T, E)> G;
    int n;
    F f;
    G g;
    T e1;
    vector<T> dat;
    SegmentTree(){};
    SegmentTree(int n_, F f, G g, T e1, vector<T> v = vector<T>())
        : f(f), g(g), e1(e1) {
        init(n_);
        if(n_ == (int)v.size()) build(n_, v);
    }
    void init(int n_) {
        n = 1;
        while(n < n_) n *= 2;
        dat.clear();
        dat.resize(2 * n - 1, e1);
    }
    void build(int n_, vector<T> v) {
        for(int i = 0; i < n_; i++) dat[i + n - 1] = v[i];
        for(int i = n - 2; i >= 0; i--)
            dat[i] = f(dat[i * 2 + 1], dat[i * 2 + 2]);
    }
    void update(int k, E a) {
        k += n - 1;
        dat[k] = g(dat[k], a);
        while(k > 0) {
            k = (k - 1) / 2;
            dat[k] = f(dat[k * 2 + 1], dat[k * 2 + 2]);
        }
    }
    inline T query(int a, int b) {
        T vl = e1, vr = e1;
        for(int l = a + n, r = b + n; l < r; l >>= 1, r >>= 1) {
            if(l & 1) vl = f(vl, dat[(l++) - 1]);
            if(r & 1) vr = f(dat[(--r) - 1], vr);
        }
        return f(vl, vr);
    }
};
ll e1 = 0;
auto f = [](ll a, ll b) { return a + b; };
auto g = [](ll a, ll b) { return a + b; };

// 0-indexed
template <class T> struct BinaryIndexedTree {
    vector<T> data;

    BinaryIndexedTree(int sz) { data.assign(++sz, 0); }

    T sum(int k) {
        T ret = 0;
        for(++k; k > 0; k -= k & -k) ret += data[k];
        return (ret);
    }

    void add(int k, T x) {
        for(++k; k < data.size(); k += k & -k) data[k] += x;
    }
};

template <class T> struct AdditionalBIT : BinaryIndexedTree<T> {
    int curr;

    AdditionalBIT(int sz) : BinaryIndexedTree<T>(sz) {
        curr = 1;
        while(curr <= sz) curr <<= 1;
    }

    int lower_bound(T w) {
        if(w <= 0) return (0);
        int i = 0;
        for(int k = curr; k > 0; k >>= 1) {
            if(i + k < BinaryIndexedTree<T>::data.size() &&
               BinaryIndexedTree<T>::data[i + k] < w) {
                w -= BinaryIndexedTree<T>::data[i + k];
                i += k;
            }
        }
        return (i);
    }
};

signed main() {
    // cinfast();
    LCIN(N);
    SegmentTree<ll, ll> r(N, f, g, e1, VL(N));
    SegmentTree<ll, ll> l(N, f, g, e1, VL(N));
    AdditionalBIT<ll> rn(N + 1);
    AdditionalBIT<ll> ln(N + 1);
    VPL xv(N);
    REP(i, N) CIN(xv[i].fi);
    REP(i, N) CIN(xv[i].se);
    sort(All(xv), [&](PL a, PL b) { return a.fi < b.fi; });
    MKORDER(N);
    sort(All(od), [&](ll i, ll j) { return xv[i].se < xv[j].se; });
    VL rod(N);
    REP(i, N) rod[od[i]] = i;
    REP(i, N) {
        ll idx = rod[i];
        r.update(idx, xv[i].fi);
        rn.add(idx, 1);
    }
    ll ans = 0;
    REP(i, N) {
        ll idx = rod[i];
        ll sum = r.query(idx, N) - (rn.sum(N) - rn.sum(idx - 1)) * xv[i].fi;
        sum += -l.query(0, idx + 1) + ln.sum(idx) * xv[i].fi;
        ans += sum;
        r.update(idx, -xv[i].fi);
        l.update(idx, xv[i].fi);
        rn.add(idx, -1);
        ln.add(idx, 1);
    }
    assert(ans % 2 == 0);
    cout << ans / 2 << "\n";
}
