結果

問題 No.2523 Trick Flower
ユーザー torisasami4torisasami4
提出日時 2023-10-27 23:51:40
言語 C++17
(gcc 12.3.0 + boost 1.83.0)
結果
WA  
実行時間 -
コード長 7,526 bytes
コンパイル時間 3,172 ms
コンパイル使用メモリ 247,180 KB
実行使用メモリ 21,184 KB
最終ジャッジ日時 2024-09-25 15:36:25
合計ジャッジ時間 5,589 ms
ジャッジサーバーID
(参考情報)
judge4 / judge2
このコードへのチャレンジ
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テストケース

テストケース表示
入力 結果 実行時間
実行使用メモリ
testcase_00 AC 2 ms
5,248 KB
testcase_01 AC 2 ms
5,376 KB
testcase_02 AC 2 ms
5,376 KB
testcase_03 AC 2 ms
5,376 KB
testcase_04 AC 2 ms
5,376 KB
testcase_05 AC 2 ms
5,376 KB
testcase_06 AC 2 ms
5,376 KB
testcase_07 WA -
testcase_08 WA -
testcase_09 WA -
testcase_10 AC 2 ms
5,376 KB
testcase_11 AC 2 ms
5,376 KB
testcase_12 WA -
testcase_13 WA -
testcase_14 WA -
testcase_15 AC 78 ms
16,512 KB
testcase_16 AC 71 ms
16,512 KB
testcase_17 AC 56 ms
17,344 KB
testcase_18 AC 63 ms
21,184 KB
testcase_19 AC 72 ms
16,512 KB
testcase_20 WA -
testcase_21 WA -
testcase_22 WA -
testcase_23 WA -
testcase_24 WA -
testcase_25 AC 60 ms
15,104 KB
testcase_26 WA -
testcase_27 AC 66 ms
15,744 KB
testcase_28 WA -
testcase_29 WA -
testcase_30 AC 45 ms
12,416 KB
testcase_31 WA -
testcase_32 AC 27 ms
8,576 KB
testcase_33 WA -
権限があれば一括ダウンロードができます

ソースコード

diff #

// #define _GLIBCXX_DEBUG
#pragma GCC optimize("O2,no-stack-protector,unroll-loops,fast-math")
#include <bits/stdc++.h>
using namespace std;
#define rep(i, n) for (int i = 0; i < int(n); i++)
#define per(i, n) for (int i = (n)-1; 0 <= i; i--)
#define rep2(i, l, r) for (int i = (l); i < int(r); i++)
#define per2(i, l, r) for (int i = (r)-1; int(l) <= i; i--)
#define each(e, v) for (auto& e : v)
#define MM << " " <<
#define pb push_back
#define eb emplace_back
#define all(x) begin(x), end(x)
#define rall(x) rbegin(x), rend(x)
#define sz(x) (int)x.size()
template <typename T> void print(const vector<T>& v, T x = 0) {
    int n = v.size();
    for (int i = 0; i < n; i++) cout << v[i] + x << (i == n - 1 ? '\n' : ' ');
    if (v.empty()) cout << '\n';
}
using ll = long long;
using pii = pair<int, int>;
using pll = pair<ll, ll>;
template <typename T> bool chmax(T& x, const T& y) {
    return (x < y) ? (x = y, true) : false;
}
template <typename T> bool chmin(T& x, const T& y) {
    return (x > y) ? (x = y, true) : false;
}
template <class T>
using minheap = std::priority_queue<T, std::vector<T>, std::greater<T>>;
template <class T> using maxheap = std::priority_queue<T>;
template <typename T> int lb(const vector<T>& v, T x) {
    return lower_bound(begin(v), end(v), x) - begin(v);
}
template <typename T> int ub(const vector<T>& v, T x) {
    return upper_bound(begin(v), end(v), x) - begin(v);
}
template <typename T> void rearrange(vector<T>& v) {
    sort(begin(v), end(v));
    v.erase(unique(begin(v), end(v)), end(v));
}

// __int128_t gcd(__int128_t a, __int128_t b) {
//     if (a == 0)
//         return b;
//     if (b == 0)
//         return a;
//     __int128_t cnt = a % b;
//     while (cnt != 0) {
//         a = b;
//         b = cnt;
//         cnt = a % b;
//     }
//     return b;
// }

struct Union_Find_Tree {
    vector<int> data;
    const int n;
    int cnt;
 
    Union_Find_Tree(int n) : data(n, -1), n(n), cnt(n) {}
 
    int root(int x) {
        if (data[x] < 0) return x;
        return data[x] = root(data[x]);
    }
 
    int operator[](int i) { return root(i); }
 
    bool unite(int x, int y) {
        x = root(x), y = root(y);
        if (x == y) return false;
        if (data[x] > data[y]) swap(x, y);
        data[x] += data[y], data[y] = x;
        cnt--;
        return true;
    }
 
    int size(int x) { return -data[root(x)]; }
 
    int count() { return cnt; };
 
    bool same(int x, int y) { return root(x) == root(y); }
 
    void clear() {
        cnt = n;
        fill(begin(data), end(data), -1);
    }
};

template <int mod> struct Mod_Int {
    int x;

    Mod_Int() : x(0) {}

    Mod_Int(long long y) : x(y >= 0 ? y % mod : (mod - (-y) % mod) % mod) {}

    static int get_mod() { return mod; }

    Mod_Int& operator+=(const Mod_Int& p) {
        if ((x += p.x) >= mod) x -= mod;
        return *this;
    }

    Mod_Int& operator-=(const Mod_Int& p) {
        if ((x += mod - p.x) >= mod) x -= mod;
        return *this;
    }

    Mod_Int& operator*=(const Mod_Int& p) {
        x = (int)(1LL * x * p.x % mod);
        return *this;
    }

    Mod_Int& operator/=(const Mod_Int& p) {
        *this *= p.inverse();
        return *this;
    }

    Mod_Int& operator++() { return *this += Mod_Int(1); }

    Mod_Int operator++(int) {
        Mod_Int tmp = *this;
        ++*this;
        return tmp;
    }

    Mod_Int& operator--() { return *this -= Mod_Int(1); }

    Mod_Int operator--(int) {
        Mod_Int tmp = *this;
        --*this;
        return tmp;
    }

    Mod_Int operator-() const { return Mod_Int(-x); }

    Mod_Int operator+(const Mod_Int& p) const { return Mod_Int(*this) += p; }

    Mod_Int operator-(const Mod_Int& p) const { return Mod_Int(*this) -= p; }

    Mod_Int operator*(const Mod_Int& p) const { return Mod_Int(*this) *= p; }

    Mod_Int operator/(const Mod_Int& p) const { return Mod_Int(*this) /= p; }

    bool operator==(const Mod_Int& p) const { return x == p.x; }

    bool operator!=(const Mod_Int& p) const { return x != p.x; }

    Mod_Int inverse() const {
        assert(*this != Mod_Int(0));
        return pow(mod - 2);
    }

    Mod_Int pow(long long k) const {
        Mod_Int now = *this, ret = 1;
        for (; k > 0; k >>= 1, now *= now) {
            if (k & 1) ret *= now;
        }
        return ret;
    }

    friend ostream& operator<<(ostream& os, const Mod_Int& p) {
        return os << p.x;
    }

    friend istream& operator>>(istream& is, Mod_Int& p) {
        long long a;
        is >> a;
        p = Mod_Int<mod>(a);
        return is;
    }
};

ll mpow2(ll x, ll n, ll mod) {
    ll ans = 1;
    x %= mod;
    while (n != 0) {
        if (n & 1) ans = ans * x % mod;
        x = x * x % mod;
        n = n >> 1;
    }
    ans %= mod;
    return ans;
}

template <typename T> T modinv(T a, const T& m) {
    T b = m, u = 1, v = 0;
    while (b > 0) {
        T t = a / b;
        swap(a -= t * b, b);
        swap(u -= t * v, v);
    }
    return u >= 0 ? u % m : (m - (-u) % m) % m;
}

ll divide_int(ll a, ll b) {
    if (b < 0) a = -a, b = -b;
    return (a >= 0 ? a / b : (a - b + 1) / b);
}

// const int MOD = 1000000007;
const int MOD = 998244353;
using mint = Mod_Int<MOD>;

// ----- library -------
pair<vector<vector<int>>, vector<vector<int>>> functional_graph_decompose(const vector<int> &a) {
    int n = a.size();
    vector<vector<int>> cycles;
    vector<vector<int>> es(n);
    vector<int> c(n, 0);
    for (int i = 0; i < n; i++) {
        for (int p = i;; p = a[p]) {
            if (c[p] == 1) {
                int q = p;
                vector<int> cycle;
                do {
                    cycle.push_back(q);
                    c[q] = 3;
                    q = a[q];
                } while (q != p);
                cycles.push_back(cycle);
            }
            if (c[p] >= 2) break;
            c[p]++;
        }
        for (int p = i; c[p] == 1; p = a[p]) c[p] = 2;
    }
    for (int i = 0; i < n; i++) {
        if (c[i] != 3) {
            es[i].push_back(a[i]);
            es[a[i]].push_back(i);
        }
    }
    return make_pair(cycles, es);
}
// ----- library -------

int main() {
    ios::sync_with_stdio(false);
    std::cin.tie(nullptr);
    cout << fixed << setprecision(15);

    int n;
    cin >> n;
    vector<ll> a(n), b(n);
    vector<int> c(n);
    rep(i, n) cin >> a[i];
    rep(i, n) cin >> b[i];
    rep(i, n) cin >> c[i], c[i]--;
    auto [cs, es] = functional_graph_decompose(c);
    vector<int> fc(n, 0);
    Union_Find_Tree uf(n);
    for (auto p : cs) {
        for (auto q : p)
            uf.unite(q, p[0]), fc[q] = 1;
    }
    vector<int> ord;
    queue<int> que;
    vector<int> ind(n, 0);
    rep(i, n) each(e, es[i]) ind[e]++;
    rep(i, n) if (!ind[i] && !fc[i]) que.push(i);
    while (sz(que)) {
        int now = que.front();
        que.pop();
        ord.eb(now);
        each(e, es[now]) {
            ind[e]--;
            if (!ind[e] && !fc[e])
                que.push(e);
        }
    }
    ll sa = accumulate(all(a), 0ll), sb = accumulate(all(b), 0ll);
    ll ok = 0, ng = sa / sb + 1;
    while (abs(ok - ng) > 1) {
        ll mid = (ok + ng) / 2;
        vector<ll> d(n);
        rep(i, n) d[i] = b[i] * mid - a[i];
        each(e, ord) d[c[e]] += max(0ll, d[e]);
        rep(i, n) if (fc[i] && uf.root(i) != i) d[uf.root(i)] += d[i];
        bool fl = true;
        rep(i, n) if (fc[i] && uf.root(i) == i && d[i] > 0) fl = false;
        (fl ? ok : ng) = mid;
    }
    cout << ok << endl;
}
0