結果

問題 No.489 株に挑戦
ユーザー iiljjiiljj
提出日時 2020-07-18 22:53:52
言語 C++17
(gcc 12.3.0 + boost 1.83.0)
結果
WA  
実行時間 -
コード長 7,282 bytes
コンパイル時間 2,510 ms
コンパイル使用メモリ 210,700 KB
実行使用メモリ 6,824 KB
最終ジャッジ日時 2024-12-14 11:19:40
合計ジャッジ時間 4,882 ms
ジャッジサーバーID
(参考情報)
judge5 / judge4
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 11 ms
6,820 KB
testcase_01 WA -
testcase_02 AC 2 ms
6,820 KB
testcase_03 AC 2 ms
6,816 KB
testcase_04 AC 1 ms
6,820 KB
testcase_05 AC 2 ms
6,820 KB
testcase_06 AC 2 ms
6,824 KB
testcase_07 AC 2 ms
6,816 KB
testcase_08 AC 2 ms
6,816 KB
testcase_09 AC 2 ms
6,816 KB
testcase_10 AC 2 ms
6,816 KB
testcase_11 AC 2 ms
6,820 KB
testcase_12 WA -
testcase_13 WA -
testcase_14 AC 2 ms
6,816 KB
testcase_15 AC 2 ms
6,816 KB
testcase_16 AC 12 ms
6,816 KB
testcase_17 AC 3 ms
6,816 KB
testcase_18 AC 7 ms
6,820 KB
testcase_19 WA -
testcase_20 AC 13 ms
6,816 KB
testcase_21 AC 5 ms
6,816 KB
testcase_22 AC 3 ms
6,816 KB
testcase_23 AC 9 ms
6,820 KB
testcase_24 WA -
testcase_25 AC 2 ms
6,816 KB
testcase_26 AC 12 ms
6,816 KB
testcase_27 AC 12 ms
6,820 KB
testcase_28 AC 2 ms
6,816 KB
testcase_29 AC 2 ms
6,816 KB
testcase_30 WA -
testcase_31 AC 12 ms
6,816 KB
testcase_32 AC 9 ms
6,820 KB
testcase_33 AC 13 ms
6,816 KB
testcase_34 WA -
testcase_35 AC 6 ms
6,820 KB
testcase_36 AC 4 ms
6,816 KB
testcase_37 AC 9 ms
6,820 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 #

/* #region Head */

// #define _GLIBCXX_DEBUG
#include <bits/stdc++.h>
using namespace std;

using ll = long long;
using ull = unsigned long long;
using ld = long double;
using pll = pair<ll, ll>;
template <class T> using vc = vector<T>;
template <class T> using vvc = vc<vc<T>>;
using vll = vc<ll>;
using vvll = vvc<ll>;
using vld = vc<ld>;
using vvld = vvc<ld>;
using vs = vc<string>;
using vvs = vvc<string>;
template <class T, class U> using um = unordered_map<T, U>;
template <class T> using pq = priority_queue<T>;
template <class T> using pqa = priority_queue<T, vc<T>, greater<T>>;
template <class T> using us = unordered_set<T>;

#define REP(i, m, n) for (ll i = (m), i##_len = (ll)(n); i < i##_len; ++(i))
#define REPM(i, m, n) for (ll i = (m), i##_max = (ll)(n); i <= i##_max; ++(i))
#define REPR(i, m, n) for (ll i = (m), i##_min = (ll)(n); i >= i##_min; --(i))
#define REPD(i, m, n, d) for (ll i = (m), i##_len = (ll)(n); i < i##_len; i += (d))
#define REPMD(i, m, n, d) for (ll i = (m), i##_max = (ll)(n); i <= i##_max; i += (d))
#define REPI(itr, ds) for (auto itr = ds.begin(); itr != ds.end(); itr++)
#define ALL(x) begin(x), end(x)
#define SIZE(x) ((ll)(x).size())
#define PERM(c)                                                                                                        \
    sort(ALL(c));                                                                                                      \
    for (bool c##p = 1; c##p; c##p = next_permutation(ALL(c)))
#define UNIQ(v) v.erase(unique(ALL(v)), v.end());

#define endl '\n'
#define sqrt sqrtl
#define floor floorl
#define log2 log2l

constexpr ll INF = 1'010'000'000'000'000'017LL;
constexpr ll MOD = 1'000'000'007LL; // 1e9 + 7
constexpr ld EPS = 1e-12;
constexpr ld PI = 3.14159265358979323846;

template <typename T> istream &operator>>(istream &is, vc<T> &vec) { // vector 入力
    for (T &x : vec) is >> x;
    return is;
}
template <typename T> ostream &operator<<(ostream &os, vc<T> &vec) { // vector 出力 (for dump)
    os << "{";
    REP(i, 0, SIZE(vec)) os << vec[i] << (i == i_len - 1 ? "" : ", ");
    os << "}";
    return os;
}
template <typename T> ostream &operator>>(ostream &os, vc<T> &vec) { // vector 出力 (inline)
    REP(i, 0, SIZE(vec)) os << vec[i] << (i == i_len - 1 ? "\n" : " ");
    return os;
}

template <typename T, typename U> istream &operator>>(istream &is, pair<T, U> &pair_var) { // pair 入力
    is >> pair_var.first >> pair_var.second;
    return is;
}
template <typename T, typename U> ostream &operator<<(ostream &os, pair<T, U> &pair_var) { // pair 出力
    os << "(" << pair_var.first << ", " << pair_var.second << ")";
    return os;
}

// map, um, set, us 出力
template <class T> ostream &out_iter(ostream &os, T &map_var) {
    os << "{";
    REPI(itr, map_var) {
        os << *itr;
        auto itrcp = itr;
        if (++itrcp != map_var.end()) os << ", ";
    }
    return os << "}";
}
template <typename T, typename U> ostream &operator<<(ostream &os, map<T, U> &map_var) { return out_iter(os, map_var); }
template <typename T, typename U> ostream &operator<<(ostream &os, um<T, U> &map_var) {
    os << "{";
    REPI(itr, map_var) {
        auto [key, value] = *itr;
        os << "(" << key << ", " << value << ")";
        auto itrcp = itr;
        if (++itrcp != map_var.end()) os << ", ";
    }
    os << "}";
    return os;
}
template <typename T> ostream &operator<<(ostream &os, set<T> &set_var) { return out_iter(os, set_var); }
template <typename T> ostream &operator<<(ostream &os, us<T> &set_var) { return out_iter(os, set_var); }
template <typename T> ostream &operator<<(ostream &os, pq<T> &pq_var) {
    pq<T> pq_cp(pq_var);
    os << "{";
    if (!pq_cp.empty()) {
        os << pq_cp.top(), pq_cp.pop();
        while (!pq_cp.empty()) os << ", " << pq_cp.top(), pq_cp.pop();
    }
    return os << "}";
}

// dump
#define DUMPOUT cerr
void dump_func() { DUMPOUT << endl; }
template <class Head, class... Tail> void dump_func(Head &&head, Tail &&... tail) {
    DUMPOUT << head;
    if (sizeof...(Tail) > 0) DUMPOUT << ", ";
    dump_func(move(tail)...);
}

// chmax (更新「される」かもしれない値が前)
template <typename T, typename U, typename Comp = less<>> bool chmax(T &xmax, const U &x, Comp comp = {}) {
    if (comp(xmax, x)) {
        xmax = x;
        return true;
    }
    return false;
}

// chmin (更新「される」かもしれない値が前)
template <typename T, typename U, typename Comp = less<>> bool chmin(T &xmin, const U &x, Comp comp = {}) {
    if (comp(x, xmin)) {
        xmin = x;
        return true;
    }
    return false;
}

// ローカル用
#define DEBUG_

#ifdef DEBUG_
#define DEB
#define dump(...)                                                                                                      \
    DUMPOUT << "  " << string(#__VA_ARGS__) << ": "                                                                    \
            << "[" << to_string(__LINE__) << ":" << __FUNCTION__ << "]" << endl                                        \
            << "    ",                                                                                                 \
        dump_func(__VA_ARGS__)
#else
#define DEB if (false)
#define dump(...)
#endif

struct AtCoderInitialize {
    static constexpr int IOS_PREC = 15;
    static constexpr bool AUTOFLUSH = false;
    AtCoderInitialize() {
        ios_base::sync_with_stdio(false), cin.tie(nullptr), cout.tie(nullptr);
        cout << fixed << setprecision(IOS_PREC);
        if (AUTOFLUSH) cout << unitbuf;
    }
} ATCODER_INITIALIZE;

void Yn(bool p) { cout << (p ? "Yes" : "No") << endl; }
void YN(bool p) { cout << (p ? "YES" : "NO") << endl; }

/* #endregion */

// スライド最小値・最大値問題
// seq: シーケンス
// w: ウィンドウ幅
// f: 要素同士の比較(キュー末尾,追加要素)-> 末尾を捨てるかどうか
template <typename T> vc<T> slideMinMax(vc<T> &seq, int w, function<bool(T, T)> f) {
    ll n = SIZE(seq);
    // ret[i]: 区間 [i-w+1,i] (閉区間) における seq の最大値・最小値を与えるインデックス.
    //         末尾が i 番目になる長さ w の部分列の最大値・最小値を与えるインデックス.
    //         (長さ w 未満の左側領域もついでに計算)
    vc<T> ret(n);
    deque<int> q;

    REP(i, 0, n) {
        if (!q.empty() && q.front() == i - w) q.pop_front(); // 期限切れ
        while (!q.empty() && f(seq[q.back()], seq[i])) q.pop_back();
        q.push_back(i);
        ret[i] = q.front();
    }
    return ret;
}

// Problem
void solve() {
    ll n, d, k;
    cin >> n >> d >> k;
    vll x(n);
    cin >> x;

    auto f = [](ll a, ll latest) -> bool {
        return a < latest; // 古いものが小さかったら追い出す
    };
    vll r = slideMinMax<ll>(x, d, f);

    ll ma = 0, buy = -1, sell = -1;
    REP(i, 0, n - d) {
        ll from = x[i];
        ll to = x[r[i + d]];
        if (chmax(ma, to - from)) {
            buy = i, sell = r[i + d];
        }
    }
    if (ma == 0) {
        cout << 0 << endl;
        return;
    }
    cout << (ma * k) << endl;
    cout << buy << " " << sell << endl;
}

// entry point
int main() {
    solve();
    return 0;
}
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