結果

問題 No.318 学学学学学
ユーザー kuhaku
提出日時 2025-02-24 20:24:58
言語 C++23
(gcc 13.3.0 + boost 1.87.0)
結果
AC  
実行時間 67 ms / 2,000 ms
コード長 10,311 bytes
コンパイル時間 4,576 ms
コンパイル使用メモリ 309,436 KB
実行使用メモリ 6,824 KB
最終ジャッジ日時 2025-02-24 20:25:07
合計ジャッジ時間 8,350 ms
ジャッジサーバーID
（参考情報） 		judge1 / judge3
このコードへのチャレンジ
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ファイルパターン 結果
sample AC * 3
other AC * 26
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 # 

// competitive-verifier: PROBLEM
#include <algorithm>
#include <iterator>
#include <vector>
/**
 * @brief 座標圧縮
 *
 * @tparam T 要素の型
 */
template <class T>
struct coordinate_compression {
    coordinate_compression() = default;
    coordinate_compression(const std::vector<T> &_data) : data(_data) { build(); }
    const T &operator[](int i) const { return data[i]; }
    void add(T x) { data.emplace_back(x); }
    void build() {
        std::sort(data.begin(), data.end());
        data.erase(std::unique(data.begin(), data.end()), data.end());
    }
    bool exists(T x) const {
        auto it = std::lower_bound(data.begin(), data.end(), x);
        return it != data.end() && *it == x;
    }
    int get(T x) const {
        auto it = std::lower_bound(data.begin(), data.end(), x);
        return std::distance(data.begin(), it);
    }
    int size() const { return data.size(); }
  private:
    std::vector<T> data;
};
/**
 * @brief 座標圧縮
 *
 * @tparam T 要素の型
 * @param v 配列
 * @return std::vector<T>
 */
template <class T>
std::vector<int> compress(const std::vector<T> &v) {
    coordinate_compression cps(v);
    std::vector<int> res;
    res.reserve(std::size(v));
    for (auto &&x : v) res.emplace_back(cps.get(x));
    return res;
}
#include <cassert>
namespace internal {
// @return same with std::bit::bit_ceil
unsigned int bit_ceil(unsigned int n) {
    unsigned int x = 1;
    while (x < (unsigned int)(n)) x *= 2;
    return x;
}
// @param n `1 <= n`
// @return same with std::bit::countl_zero
int countl_zero(unsigned int n) { return __builtin_clz(n); }
// @param n `1 <= n`
// @return same with std::bit::countr_zero
int countr_zero(unsigned int n) { return __builtin_ctz(n); }
// @param n `1 <= n`
// @return same with std::bit::countr_zero
constexpr int countr_zero_constexpr(unsigned int n) {
    int x = 0;
    while (!(n & (1 << x))) x++;
    return x;
}
}  // namespace internal
#include <limits>
#include <numeric>
#include <utility>
template <class T>
struct Add {
    using value_type = T;
    static constexpr T id() { return T(); }
    static constexpr T op(const T &lhs, const T &rhs) { return lhs + rhs; }
    template <class U>
    static constexpr U f(T lhs, U rhs) {
        return lhs + rhs;
    }
};
template <class T>
struct Mul {
    using value_type = T;
    static constexpr T id() { return T(1); }
    static constexpr T op(const T &lhs, const T &rhs) { return lhs * rhs; }
    template <class U>
    static constexpr U f(T lhs, U rhs) {
        return lhs * rhs;
    }
};
template <class T>
struct And {
    using value_type = T;
    static constexpr T id() { return std::numeric_limits<T>::max(); }
    static constexpr T op(const T &lhs, const T &rhs) { return lhs & rhs; }
    template <class U>
    static constexpr U f(T lhs, U rhs) {
        return lhs & rhs;
    }
};
template <class T>
struct Or {
    using value_type = T;
    static constexpr T id() { return T(); }
    static constexpr T op(const T &lhs, const T &rhs) { return lhs | rhs; }
    template <class U>
    static constexpr U f(T lhs, U rhs) {
        return lhs | rhs;
    }
};
template <class T>
struct Xor {
    using value_type = T;
    static constexpr T id() { return T(); }
    static constexpr T op(const T &lhs, const T &rhs) { return lhs ^ rhs; }
    template <class U>
    static constexpr U f(T lhs, U rhs) {
        return lhs ^ rhs;
    }
};
template <class T>
struct Min {
    using value_type = T;
    static constexpr T id() { return std::numeric_limits<T>::max(); }
    static constexpr T op(const T &lhs, const T &rhs) { return std::min(lhs, rhs); }
    template <class U>
    static constexpr U f(T lhs, U rhs) {
        return std::min((U)lhs, rhs);
    }
};
template <class T>
struct Max {
    using value_type = T;
    static constexpr T id() { return std::numeric_limits<T>::lowest(); }
    static constexpr T op(const T &lhs, const T &rhs) { return std::max(lhs, rhs); }
    template <class U>
    static constexpr U f(T lhs, U rhs) {
        return std::max((U)lhs, rhs);
    }
};
template <class T>
struct Gcd {
    using value_type = T;
    static constexpr T id() { return std::numeric_limits<T>::max(); }
    static constexpr T op(const T &lhs, const T &rhs) {
        return lhs == Gcd::id() ? rhs : (rhs == Gcd::id() ? lhs : std::gcd(lhs, rhs));
    }
};
template <class T>
struct Lcm {
    using value_type = T;
    static constexpr T id() { return std::numeric_limits<T>::max(); }
    static constexpr T op(const T &lhs, const T &rhs) {
        return lhs == Lcm::id() ? rhs : (rhs == Lcm::id() ? lhs : std::lcm(lhs, rhs));
    }
};
template <class T>
struct Update {
    using value_type = T;
    static constexpr T id() { return std::numeric_limits<T>::max(); }
    static constexpr T op(const T &lhs, const T &rhs) { return lhs == Update::id() ? rhs : lhs; }
    template <class U>
    static constexpr U f(T lhs, U rhs) {
        return lhs == Update::id() ? rhs : lhs;
    }
};
template <class T>
struct Affine {
    using P = std::pair<T, T>;
    using value_type = P;
    static constexpr P id() { return P(1, 0); }
    static constexpr P op(P lhs, P rhs) {
        return {lhs.first * rhs.first, lhs.first * rhs.second + lhs.second};
    }
};
template <class M>
struct Rev {
    using T = typename M::value_type;
    using value_type = T;
    static constexpr T id() { return M::id(); }
    static constexpr T op(T lhs, T rhs) { return M::op(rhs, lhs); }
};
/**
 * @brief 双対セグメント木
 *
 * @tparam M モノイド
 */
template <class M>
struct dual_segment_tree {
  private:
    using T = typename M::value_type;
  public:
    dual_segment_tree() : dual_segment_tree(0) {}
    explicit dual_segment_tree(int n, T e = M::id()) : dual_segment_tree(std::vector<T>(n, e)) {}
    template <class U>
    explicit dual_segment_tree(const std::vector<U> &v) : _n(v.size()) {
        _size = internal::bit_ceil(_n);
        _log = internal::countr_zero(_size);
        data = std::vector<T>(_size << 1, M::id());
        for (int i = 0; i < _n; ++i) data[_size + i] = T(v[i]);
    }
    T at(int k) { return get(k); }
    T get(int k) {
        assert(0 <= k && k < _n);
        k += _size;
        for (int i = _log; i >= 1; --i) push(k >> i);
        return data[k];
    }
    void apply(int a, T val) { apply(a, a + 1, val); }
    void apply(int a, int b, T val) {
        assert(0 <= a && a <= _n);
        assert(0 <= b && b <= _n);
        a += _size, b += _size;
        for (int i = _log; i >= 1; --i) {
            if (((a >> i) << i) != a) push(a >> i);
            if (((b >> i) << i) != b) push((b - 1) >> i);
        }
        for (; a < b; a >>= 1, b >>= 1) {
            if (a & 1) all_apply(a++, val);
            if (b & 1) all_apply(--b, val);
        }
    }
  private:
    int _n, _size, _log;
    std::vector<T> data;
    void all_apply(int k, T val) { data[k] = M::op(val, data[k]); }
    void push(int k) {
        all_apply(2 * k, data[k]);
        all_apply(2 * k + 1, data[k]);
        data[k] = M::id();
    }
};
#ifdef ATCODER
#pragma GCC target("sse4.2,avx512f,avx512dq,avx512ifma,avx512cd,avx512bw,avx512vl,bmi2")
#endif
#pragma GCC optimize("Ofast,fast-math,unroll-all-loops")
#include <bits/stdc++.h>
#ifndef ATCODER
#pragma GCC target("sse4.2,avx2,bmi2")
#endif
template <class T, class U>
constexpr bool chmax(T &a, const U &b) {
    return a < (T)b ? a = (T)b, true : false;
}
template <class T, class U>
constexpr bool chmin(T &a, const U &b) {
    return (T)b < a ? a = (T)b, true : false;
}
constexpr std::int64_t INF = 1000000000000000003;
constexpr int Inf = 1000000003;
constexpr double EPS = 1e-7;
constexpr double PI = 3.14159265358979323846;
#define FOR(i, m, n) for (int i = (m); i < int(n); ++i)
#define FORR(i, m, n) for (int i = (m)-1; i >= int(n); --i)
#define FORL(i, m, n) for (int64_t i = (m); i < int64_t(n); ++i)
#define rep(i, n) FOR (i, 0, n)
#define repn(i, n) FOR (i, 1, n + 1)
#define repr(i, n) FORR (i, n, 0)
#define repnr(i, n) FORR (i, n + 1, 1)
#define all(s) (s).begin(), (s).end()
struct Sonic {
    Sonic() {
        std::ios::sync_with_stdio(false);
        std::cin.tie(nullptr);
        std::cout << std::fixed << std::setprecision(20);
    }
    constexpr void operator()() const {}
} sonic;
using namespace std;
using ll = std::int64_t;
using ld = long double;
template <class T, class U>
std::istream &operator>>(std::istream &is, std::pair<T, U> &p) {
    return is >> p.first >> p.second;
}
template <class T>
std::istream &operator>>(std::istream &is, std::vector<T> &v) {
    for (T &i : v) is >> i;
    return is;
}
template <class T, class U>
std::ostream &operator<<(std::ostream &os, const std::pair<T, U> &p) {
    return os << '(' << p.first << ',' << p.second << ')';
}
template <class T>
std::ostream &operator<<(std::ostream &os, const std::vector<T> &v) {
    for (auto it = v.begin(); it != v.end(); ++it) os << (it == v.begin() ? "" : " ") << *it;
    return os;
}
template <class Head, class... Tail>
void co(Head &&head, Tail &&...tail) {
    if constexpr (sizeof...(tail) == 0) std::cout << head << '\n';
    else std::cout << head << ' ', co(std::forward<Tail>(tail)...);
}
template <class Head, class... Tail>
void ce(Head &&head, Tail &&...tail) {
    if constexpr (sizeof...(tail) == 0) std::cerr << head << '\n';
    else std::cerr << head << ' ', ce(std::forward<Tail>(tail)...);
}
void Yes(bool is_correct = true) { std::cout << (is_correct ? "Yes\n" : "No\n"); }
void No(bool is_not_correct = true) { Yes(!is_not_correct); }
void YES(bool is_correct = true) { std::cout << (is_correct ? "YES\n" : "NO\n"); }
void NO(bool is_not_correct = true) { YES(!is_not_correct); }
void Takahashi(bool is_correct = true) { std::cout << (is_correct ? "Takahashi" : "Aoki") << '\n'; }
void Aoki(bool is_not_correct = true) { Takahashi(!is_not_correct); }
int main(void) {
    int n;
    cin >> n;
    vector<int> a(n);
    cin >> a;
    coordinate_compression cps(a);
    auto b = compress(a);
    dual_segment_tree<Update<int>> seg(n);
    vector<int> l(cps.size(), Inf), r(cps.size());
    rep (i, n) {
        chmin(l[b[i]], i);
        chmax(r[b[i]], i);
    }
    rep (i, cps.size()) {
        seg.apply(l[i], r[i] + 1, cps[i]);
    }
    vector<int> ans(n);
    rep (i, n) ans[i] = seg.get(i);
    co(ans);
    return 0;
}
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