結果

問題 No.2139 K Consecutive Sushi
ユーザー sten_sansten_san
提出日時 2022-12-06 11:31:57
言語 C++17
(gcc 12.3.0 + boost 1.83.0)
結果
AC  
実行時間 153 ms / 2,000 ms
コード長 3,115 bytes
コンパイル時間 2,063 ms
コンパイル使用メモリ 206,868 KB
実行使用メモリ 21,468 KB
最終ジャッジ日時 2024-05-05 19:23:27
合計ジャッジ時間 5,301 ms
ジャッジサーバーID
(参考情報)
judge4 / judge3
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 153 ms
21,228 KB
testcase_04 AC 145 ms
14,336 KB
testcase_05 AC 153 ms
21,216 KB
testcase_06 AC 148 ms
21,468 KB
testcase_07 AC 147 ms
21,228 KB
testcase_08 AC 128 ms
14,080 KB
testcase_09 AC 128 ms
14,080 KB
testcase_10 AC 134 ms
14,024 KB
testcase_11 AC 133 ms
13,952 KB
testcase_12 AC 120 ms
14,080 KB
testcase_13 AC 2 ms
5,376 KB
testcase_14 AC 2 ms
5,376 KB
testcase_15 AC 2 ms
5,376 KB
testcase_16 AC 1 ms
5,376 KB
testcase_17 AC 2 ms
5,376 KB
testcase_18 AC 3 ms
5,376 KB
testcase_19 AC 2 ms
5,376 KB
testcase_20 AC 2 ms
5,376 KB
testcase_21 AC 1 ms
5,376 KB
testcase_22 AC 3 ms
5,376 KB
testcase_23 AC 12 ms
5,376 KB
testcase_24 AC 46 ms
7,936 KB
testcase_25 AC 93 ms
12,564 KB
testcase_26 AC 15 ms
5,376 KB
testcase_27 AC 38 ms
7,808 KB
testcase_28 AC 42 ms
7,808 KB
testcase_29 AC 19 ms
5,376 KB
testcase_30 AC 48 ms
8,192 KB
testcase_31 AC 124 ms
13,824 KB
testcase_32 AC 21 ms
5,632 KB
testcase_33 AC 145 ms
20,864 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 #

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

struct iofast_t {
    iofast_t() {
        ios::sync_with_stdio(false);
        cin.tie(nullptr);
    }
} iofast;

struct uns_t {} uns;
template <typename Element, typename Head, typename ...Args>
auto vec(Element init, Head arg, Args ...args) {
    if constexpr (sizeof...(Args) == 0) return vector(arg, init);
    else return vector(arg, vec(init, args...));
}
template <typename Element, typename Head, typename ...Args>
auto vec(uns_t, Head arg, Args ...args) {
    return vec(Element(), arg, args...);
}

template <typename Container>
auto distance(const Container &c, decltype(begin(c)) iter) {
    return distance(begin(c), iter);
}

template <typename RIter, typename Compare = less<typename iterator_traits<RIter>::value_type>>
auto isort(RIter first, RIter last, Compare comp = Compare()) {
    vector<int> i(distance(first, last));
    iota(begin(i), end(i), 0);
    sort(begin(i), end(i), [&](auto x, auto y) {
        return comp(*(first + x), *(first + y));
    });
    return i;
}

template <typename, template <typename> typename, typename = void_t<>>
struct detect : false_type {};
template <typename T, template <typename> typename Check>
struct detect<T, Check, void_t<Check<T>>> : true_type {};
template <typename T, template <typename> typename Check>
constexpr inline bool detect_v = detect<T, Check>::value;

template <typename T>
using has_member_sort = decltype(declval<T>().sort());

template <typename Container, typename Compare = less<typename Container::value_type>>
auto sorted(Container c, Compare comp = Compare()) {
    if constexpr (detect_v<Container, has_member_sort>) {
        c.sort(comp);
        return c;
    }
    else {
        sort(begin(c), end(c), comp);
        return c;
    }
}

template <typename Container, typename Compare = equal_to<typename Container::value_type>>
auto uniqued(Container c, Compare comp = Compare()) {
    c.erase(unique(begin(c), end(c), comp), end(c));
    return c;
}

template <typename T, typename Compare = less<T>>
T &chmin(T &l, T r, Compare &&f = less<T>()) { return l = min(l, r, f); }
template <typename T, typename Compare = less<T>>
T &chmax(T &l, T r, Compare &&f = less<T>()) { return l = max(l, r, f); }

#include <atcoder/lazysegtree>

auto op(int64_t a, int64_t b) {
    return max(a, b);
}
auto elem() {
    return INT64_MIN;
}

auto mapping(int64_t f, int64_t x) {
    return f + x;
}
auto composition(int64_t f, int64_t g) {
    return f + g;
}
auto id() {
    return int64_t(0);
}

using segtree = atcoder::lazy_segtree<int64_t, op, elem, int64_t, mapping, composition, id>;

int main() {
    int n, k; cin >> n >> k;
    auto a = vec<int64_t>(uns, n);
    for (auto &e : a) cin >> e;

    auto dp = vec<int64_t>(uns, n + 1);

    segtree seg(vec<int64_t>(0, n + k + 1));

    dp[0] = 0;
    for (int i = 1; i <= n; ++i) {
        int l = i - k;
        int r = i - 1;

        seg.apply(l + k, r + k, a[i - 1]);

        dp[i] = max(
            dp[i - 1],
            seg.prod(l + k, r + k)
        );

        seg.set(i + k, dp[i]);
    }

    cout << dp[n] << endl;
}

0