#947830 (C++23) No.60 魔法少女

提出ソース

結果

問題	No.60 魔法少女
ユーザー	reika727
提出日時	2024-02-04 04:16:41
言語	C++23 (gcc 12.3.0 + boost 1.83.0)
結果	AC
実行時間	184 ms / 5,000 ms
コード長	5,927 bytes
コンパイル時間	2,811 ms
コンパイル使用メモリ	256,948 KB
実行使用メモリ	12,288 KB
最終ジャッジ日時	2024-09-28 11:09:15
合計ジャッジ時間	4,794 ms
ジャッジサーバーID （参考情報）	judge3 / judge5

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	8 ms 11,392 KB
testcase_01	AC	8 ms 11,392 KB
testcase_02	AC	8 ms 11,392 KB
testcase_03	AC	8 ms 11,264 KB
testcase_04	AC	107 ms 11,392 KB
testcase_05	AC	113 ms 12,160 KB
testcase_06	AC	184 ms 12,160 KB
testcase_07	AC	142 ms 11,904 KB
testcase_08	AC	88 ms 11,776 KB
testcase_09	AC	42 ms 11,392 KB
testcase_10	AC	167 ms 12,288 KB
testcase_11	AC	25 ms 11,308 KB
testcase_12	AC	78 ms 11,904 KB
testcase_13	AC	183 ms 12,288 KB

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コンパイルメッセージ

main.cpp: In function 'int main()':
main.cpp:207:14: warning: narrowing conversion of 'y' from 'int' to 'long unsigned int' [-Wnarrowing]
  207 |             {y, x},
      |              ^
main.cpp:207:17: warning: narrowing conversion of 'x' from 'int' to 'long unsigned int' [-Wnarrowing]
  207 |             {y, x},
      |                 ^
main.cpp:208:20: warning: narrowing conversion of '((y + h) + 1)' from 'int' to 'long unsigned int' [-Wnarrowing]
  208 |             {y + h + 1, x + w + 1},
      |              ~~~~~~^~~
main.cpp:208:31: warning: narrowing conversion of '((x + w) + 1)' from 'int' to 'long unsigned int' [-Wnarrowing]
  208 |             {y + h + 1, x + w + 1},
      |                         ~~~~~~^~~

ソースコード

raw source code

#include "bits/stdc++.h"

template <std::default_initializable T, size_t Dimension>
class imos
    : protected std::conditional_t<
        Dimension == 1,
        std::vector<T>,
        std::vector<imos<T, Dimension - 1>>
      >
{
    static_assert(Dimension != 0, "Dimension must not be 0.");
    friend imos<T, Dimension + 1>;

private:
    using lower_dimension = std::conditional_t<
        Dimension == 1,
        T,
        imos<T, Dimension - 1>
    >;

    imos<T, Dimension> &operator+=(const imos<T, Dimension> &im)
    {
        for (auto i = 0uz; i < this->size(); ++i) {
            (*this)[i] += im[i];
        }
        return *this;
    }

public:
    imos(const std::size_t size, const auto... sizes)
        : std::vector<lower_dimension>(
              size + 1,
              lower_dimension(sizes...)
          )
    {
        static_assert(
            1 + sizeof...(sizes) == Dimension,
            "Number of sizes must be equal to Dimension."
        );
    }

    const T& at(const std::size_t index, const auto... indices) const
    {
        static_assert(
            1 + sizeof...(indices) == Dimension,
            "Number of indices must be equal to Dimension."
        );
        if constexpr (sizeof...(indices) == 0) {
            return (*this)[index];
        } else {
            return (*this)[index].at(indices...);
        }
    }

    void set(
        const std::span<const std::size_t, Dimension> begin,
        const std::span<const std::size_t, Dimension> end,
        const T weight
    )
    {
        const auto begin0 = std::min(begin.front(), this->size() - 1);
        const auto end0 = std::min(end.front(), this->size() - 1);
        if constexpr (Dimension > 1) {
            (*this)[begin0].set(
                begin.template last<Dimension - 1>(),
                end.template last<Dimension - 1>(),
                weight
            );
            (*this)[end0].set(
                begin.template last<Dimension - 1>(),
                end.template last<Dimension - 1>(),
                -weight
            );
        } else {
            (*this)[begin0] += weight;
            (*this)[end0] -= weight;
        }
    }

    void set(
        const std::array<std::size_t, Dimension> &begin,
        const std::array<std::size_t, Dimension> &end,
        const T weight
    )
    {
        set(std::span{begin}, std::span{end}, weight);
    }

    void set(std::size_t begin, std::size_t end, const T weight)
    {
        static_assert(
            Dimension == 1,
            "set(size_t, size_t, T) can be called only when Dimension == 1."
        );
        return set(std::array{begin}, std::array{end}, weight);
    }

    void accumulate()
    {
        for (auto i = 0uz; i < this->size() - 1; ++i) {
            (*this)[i + 1] += (*this)[i];
        }
        if constexpr (Dimension > 1) {
            for (auto &child : *this) {
                child.accumulate();
            }
        }
    }
};

template <class T, size_t Dimension>
class cyclic_imos final : public imos<T, Dimension> {
public:
    using imos<T, Dimension>::imos;

    void set_cyclic(
        const std::span<const std::size_t, Dimension> begin,
        const std::span<const std::size_t, Dimension> end,
        const T weight
    )
    {
        this->set(begin, end, weight);
        if constexpr (Dimension > 1) {
            for (unsigned i = 1; i < (1 << Dimension); ++i) {
                std::array<std::size_t, Dimension> correction_begin, correction_end;
                for (auto j = 0uz; j < Dimension; ++j) {
                    if (i & (1 << j)) {
                        if (begin[j] <= end[j]) {
                            goto CONTINUE;
                        }
                        correction_begin[j] = 0;
                        correction_end[j] = this->size() - 1;
                    } else {
                        correction_begin[j] = begin[j];
                        correction_end[j] = end[j];
                    }
                }
                this->set(correction_begin, correction_end, weight);
            CONTINUE:
                ;
            }
        } else {
            if (begin.front() > end.front()) {
                (*this).front() += weight;
                (*this).back() -= weight;
            }
        }
    }

    void set_cyclic(
        const std::array<std::size_t, Dimension> &begin,
        const std::array<std::size_t, Dimension> &end,
        const T weight
    )
    {
        set_cyclic(std::span{begin}, std::span{end}, weight);
    }

    void set_cyclic(std::size_t begin, std::size_t end, const T weight)
    {
        static_assert(
            Dimension == 1,
            "set_cyclic(size_t, size_t, T) can be called only when Dimension == 1."
        );
        return set_cyclic(std::array{begin}, std::array{end}, weight);
    }
};

template <class T>
auto make_imos(auto... sizes)
{
    return imos<T, sizeof...(sizes)>(sizes...);
}

template <class T>
auto make_cyclic_imos(auto... sizes)
{
    return cyclic_imos<T, sizeof...(sizes)>(sizes...);
}

int main()
{
    struct enemy {
        int x, y, hp;
    };

    int n, k;
    std::cin >> n >> k;
    std::vector<enemy> enemies(n);
    for (int i = 0; i < n; ++i) {
        int x, y, hp;
        std::cin >> x >> y >> hp;
        enemies[i] = {
            x + 500,
            y + 500,
            hp
        };
    }

    auto imos = make_imos<int>(1001, 1001);
    for (int i = 0; i < k; ++i) {
        int x, y, w, h, d;
        std::cin >> x >> y >> w >> h >> d;
        x += 500;
        y += 500;
        imos.set(
            {y, x},
            {y + h + 1, x + w + 1},
            d
        );
    }
    imos.accumulate();

    std::cout << std::accumulate(
        enemies.begin(), enemies.end(), 0,
        [imos](int acc, const enemy &e) {
            return acc + std::max(0, e.hp - imos.at(e.y, e.x));
        }
    ) << std::endl;
}

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結果

テストケース

コンパイルメッセージ

ソースコード