結果

問題 No.2523 Trick Flower
ユーザー ebi_flyebi_fly
提出日時 2023-10-27 22:58:46
言語 C++23
(gcc 12.3.0 + boost 1.83.0)
結果
AC  
実行時間 110 ms / 4,000 ms
コード長 6,479 bytes
コンパイル時間 2,325 ms
コンパイル使用メモリ 195,064 KB
実行使用メモリ 7,828 KB
最終ジャッジ日時 2023-10-27 22:58:51
合計ジャッジ時間 5,135 ms
ジャッジサーバーID
(参考情報)
judge15 / judge13
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
4,372 KB
testcase_01 AC 2 ms
4,372 KB
testcase_02 AC 2 ms
4,372 KB
testcase_03 AC 1 ms
4,372 KB
testcase_04 AC 2 ms
4,372 KB
testcase_05 AC 2 ms
4,372 KB
testcase_06 AC 2 ms
4,372 KB
testcase_07 AC 2 ms
4,372 KB
testcase_08 AC 2 ms
4,372 KB
testcase_09 AC 2 ms
4,372 KB
testcase_10 AC 2 ms
4,372 KB
testcase_11 AC 2 ms
4,372 KB
testcase_12 AC 2 ms
4,372 KB
testcase_13 AC 2 ms
4,372 KB
testcase_14 AC 3 ms
4,372 KB
testcase_15 AC 82 ms
7,412 KB
testcase_16 AC 78 ms
7,412 KB
testcase_17 AC 68 ms
7,828 KB
testcase_18 AC 48 ms
7,156 KB
testcase_19 AC 85 ms
7,568 KB
testcase_20 AC 110 ms
7,568 KB
testcase_21 AC 88 ms
7,564 KB
testcase_22 AC 86 ms
7,568 KB
testcase_23 AC 87 ms
7,564 KB
testcase_24 AC 47 ms
5,824 KB
testcase_25 AC 73 ms
7,300 KB
testcase_26 AC 72 ms
7,140 KB
testcase_27 AC 78 ms
7,440 KB
testcase_28 AC 63 ms
6,768 KB
testcase_29 AC 14 ms
4,372 KB
testcase_30 AC 58 ms
6,400 KB
testcase_31 AC 5 ms
4,372 KB
testcase_32 AC 33 ms
5,072 KB
testcase_33 AC 84 ms
7,528 KB
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 #

#line 1 "template/template.hpp"
#include <algorithm>
#include <bit>
#include <bitset>
#include <cassert>
#include <chrono>
#include <climits>
#include <cmath>
#include <complex>
#include <cstddef>
#include <cstdint>
#include <cstdlib>
#include <cstring>
#include <functional>
#include <iomanip>
#include <iostream>
#include <limits>
#include <map>
#include <memory>
#include <numbers>
#include <numeric>
#include <optional>
#include <queue>
#include <random>
#include <ranges>
#include <set>
#include <stack>
#include <string>
#include <tuple>
#include <type_traits>
#include <unordered_map>
#include <unordered_set>
#include <utility>
#include <vector>

#define rep(i, a, n) for (int i = (int)(a); i < (int)(n); i++)
#define rrep(i, a, n) for (int i = ((int)(n)-1); i >= (int)(a); i--)
#define Rep(i, a, n) for (i64 i = (i64)(a); i < (i64)(n); i++)
#define RRep(i, a, n) for (i64 i = ((i64)(n)-i64(1)); i >= (i64)(a); i--)
#define all(v) (v).begin(), (v).end()
#define rall(v) (v).rbegin(), (v).rend()

#line 2 "template/debug_template.hpp"

#line 4 "template/debug_template.hpp"

namespace ebi {

#ifdef LOCAL
#define debug(...)                                                      \
    std::cerr << "LINE: " << __LINE__ << "  [" << #__VA_ARGS__ << "]:", \
        debug_out(__VA_ARGS__)
#else
#define debug(...)
#endif

void debug_out() {
    std::cerr << std::endl;
}

template <typename Head, typename... Tail> void debug_out(Head h, Tail... t) {
    std::cerr << " " << h;
    if (sizeof...(t) > 0) std::cerr << " :";
    debug_out(t...);
}

}  // namespace ebi
#line 2 "template/int_alias.hpp"

#line 4 "template/int_alias.hpp"

namespace ebi {

using std::size_t;
using i8 = std::int8_t;
using u8 = std::uint8_t;
using i16 = std::int16_t;
using u16 = std::uint16_t;
using i32 = std::int32_t;
using u32 = std::uint32_t;
using i64 = std::int64_t;
using u64 = std::uint64_t;
using i128 = __int128_t;
using u128 = __uint128_t;

}  // namespace ebi
#line 2 "template/io.hpp"

#line 7 "template/io.hpp"

namespace ebi {

template <typename T1, typename T2>
std::ostream &operator<<(std::ostream &os, const std::pair<T1, T2> &pa) {
    return os << pa.first << " " << pa.second;
}

template <typename T1, typename T2>
std::istream &operator>>(std::istream &os, std::pair<T1, T2> &pa) {
    return os >> pa.first >> pa.second;
}

template <typename T>
std::ostream &operator<<(std::ostream &os, const std::vector<T> &vec) {
    for (std::size_t i = 0; i < vec.size(); i++)
        os << vec[i] << (i + 1 == vec.size() ? "" : " ");
    return os;
}

template <typename T>
std::istream &operator>>(std::istream &os, std::vector<T> &vec) {
    for (T &e : vec) std::cin >> e;
    return os;
}

template <typename T>
std::ostream &operator<<(std::ostream &os, const std::optional<T> &opt) {
    if (opt) {
        os << opt.value();
    } else {
        os << "invalid value";
    }
    return os;
}

void fast_io() {
    std::cout << std::fixed << std::setprecision(15);
    std::cin.tie(nullptr);
    std::ios::sync_with_stdio(false);
}

}  // namespace ebi
#line 2 "template/utility.hpp"

#line 5 "template/utility.hpp"

#line 7 "template/utility.hpp"

namespace ebi {

template <class T> inline bool chmin(T &a, T b) {
    if (a > b) {
        a = b;
        return true;
    }
    return false;
}

template <class T> inline bool chmax(T &a, T b) {
    if (a < b) {
        a = b;
        return true;
    }
    return false;
}

template <class T> T safe_ceil(T a, T b) {
    if (a % b == 0)
        return a / b;
    else if (a >= 0)
        return (a / b) + 1;
    else
        return -((-a) / b);
}

template <class T> T safe_floor(T a, T b) {
    if (a % b == 0)
        return a / b;
    else if (a >= 0)
        return a / b;
    else
        return -((-a) / b) - 1;
}

constexpr i64 LNF = std::numeric_limits<i64>::max() / 4;

constexpr int INF = std::numeric_limits<int>::max() / 2;

const std::vector<int> dy = {1, 0, -1, 0, 1, 1, -1, -1};
const std::vector<int> dx = {0, 1, 0, -1, 1, -1, 1, -1};

}  // namespace ebi
#line 2 "graph/template.hpp"

#line 4 "graph/template.hpp"

namespace ebi {

template <class T> struct Edge {
    int to;
    T cost;
    Edge(int _to, T _cost = 1) : to(_to), cost(_cost) {}
};

template <class T> struct Graph : std::vector<std::vector<Edge<T>>> {
    using std::vector<std::vector<Edge<T>>>::vector;
    void add_edge(int u, int v, T w, bool directed = false) {
        (*this)[u].emplace_back(v, w);
        if (directed) return;
        (*this)[v].emplace_back(u, w);
    }
};

struct graph : std::vector<std::vector<int>> {
    using std::vector<std::vector<int>>::vector;
    void add_edge(int u, int v, bool directed = false) {
        (*this)[u].emplace_back(v);
        if (directed) return;
        (*this)[v].emplace_back(u);
    }
};

}  // namespace ebi
#line 3 "a.cpp"

namespace ebi {

void main_() {
    int n;
    std::cin >> n;
    std::vector<i64> a(n), b(n);
    std::vector<int> c(n);
    std::cin >> a >> b >> c;
    std::vector<int> order;
    {
        std::vector<int> deg(n, 0);
        rep(i,0,n) {
            c[i]--;
            deg[c[i]]++;
        }
        std::stack<int> stack;
        rep(i,0,n) if(deg[i] == 0) stack.push(i);
        while(!stack.empty()) {
            int v = stack.top();
            stack.pop();
            order.emplace_back(v);
            if(--deg[c[v]] == 0) {
                stack.push(c[v]);
            }
        }
    }
    i64 ok = 0, ng = 2'000'000'000'000'000;
    while(std::abs(ok - ng) > 1) {
        i64 mid = (ok + ng) / 2;
        std::vector<i128> s(n);
        rep(i,0,n) {
            s[i] = i128(a[i]) -  i128(mid) * i128(b[i]);
        }
        std::vector<int> seen(n, -1);
        for(auto v: order) {
            seen[v] = 1;
            chmin(s[v], i128(0));
            s[c[v]] += s[v];
        }
        bool is_ok = true;
        rep(i,0,n) {
            if(seen[i] > 0) continue;
            int now = i;
            i128 sum = 0;
            while(seen[now] < 0) {
                seen[now] = 1;
                sum += s[now];
                now = c[now];
            }
            if(sum >= 0) continue;
            else {
                is_ok = false;
                break;
            }
        }
        if(is_ok) ok = mid;
        else ng = mid;
    }
    std::cout << ok << '\n';
}

}  // namespace ebi

int main() {
    ebi::fast_io();
    int t = 1;
    // std::cin >> t;
    while (t--) {
        ebi::main_();
    }
    return 0;
}
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