#929360 (C++17) No.5019 Hakai Project

提出ソース
結果

問題	No.5019 Hakai Project
ユーザー	iiljj
提出日時	2023-11-18 02:32:07
言語	C++17 (gcc 12.3.0 + boost 1.83.0)
結果	AC
実行時間	721 ms / 3,000 ms
コード長	20,355 bytes
コンパイル時間	2,345 ms
コンパイル使用メモリ	163,728 KB
実行使用メモリ	6,676 KB
スコア	2,605,364,383
最終ジャッジ日時	2023-11-18 02:32:45
合計ジャッジ時間	35,169 ms
ジャッジサーバーID （参考情報）	judge15 / judge13
	純コード判定しない問題か言語
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	502 ms 6,676 KB
testcase_01	AC	652 ms 6,676 KB
testcase_02	AC	721 ms 6,676 KB
testcase_03	AC	459 ms 6,676 KB
testcase_04	AC	421 ms 6,676 KB
testcase_05	AC	584 ms 6,676 KB
testcase_06	AC	525 ms 6,676 KB
testcase_07	AC	619 ms 6,676 KB
testcase_08	AC	509 ms 6,676 KB
testcase_09	AC	708 ms 6,676 KB
testcase_10	AC	399 ms 6,676 KB
testcase_11	AC	602 ms 6,676 KB
testcase_12	AC	598 ms 6,676 KB
testcase_13	AC	553 ms 6,676 KB
testcase_14	AC	459 ms 6,676 KB
testcase_15	AC	501 ms 6,676 KB
testcase_16	AC	497 ms 6,676 KB
testcase_17	AC	341 ms 6,676 KB
testcase_18	AC	599 ms 6,676 KB
testcase_19	AC	473 ms 6,676 KB
testcase_20	AC	594 ms 6,676 KB
testcase_21	AC	519 ms 6,676 KB
testcase_22	AC	419 ms 6,676 KB
testcase_23	AC	625 ms 6,676 KB
testcase_24	AC	636 ms 6,676 KB
testcase_25	AC	527 ms 6,676 KB
testcase_26	AC	623 ms 6,676 KB
testcase_27	AC	379 ms 6,676 KB
testcase_28	AC	498 ms 6,676 KB
testcase_29	AC	366 ms 6,676 KB
testcase_30	AC	506 ms 6,676 KB
testcase_31	AC	572 ms 6,676 KB
testcase_32	AC	637 ms 6,676 KB
testcase_33	AC	425 ms 6,676 KB
testcase_34	AC	611 ms 6,676 KB
testcase_35	AC	563 ms 6,676 KB
testcase_36	AC	515 ms 6,676 KB
testcase_37	AC	540 ms 6,676 KB
testcase_38	AC	539 ms 6,676 KB
testcase_39	AC	478 ms 6,676 KB
testcase_40	AC	721 ms 6,676 KB
testcase_41	AC	615 ms 6,676 KB
testcase_42	AC	495 ms 6,676 KB
testcase_43	AC	412 ms 6,676 KB
testcase_44	AC	666 ms 6,676 KB
testcase_45	AC	436 ms 6,676 KB
testcase_46	AC	453 ms 6,676 KB
testcase_47	AC	542 ms 6,676 KB
testcase_48	AC	616 ms 6,676 KB
testcase_49	AC	656 ms 6,676 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

raw source code
/* #region Head */

// #include <bits/stdc++.h>
#include <algorithm>
#include <array>
#include <bitset>
#include <cassert> // assert.h
#include <cmath>   // math.h
#include <cstring>
#include <ctime>
#include <deque>
#include <fstream>
#include <functional>
#include <iomanip>
#include <iostream>
#include <list>
#include <map>
#include <memory>
#include <numeric>
#include <queue>
#include <random>
#include <set>
#include <sstream>
#include <stack>
#include <string>
#include <unordered_map>
#include <unordered_set>
#include <vector>
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 TREP(T, i, m, n) for (T i = (m), i##_len = (T)(n); i < i##_len; ++(i))
#define TREPM(T, i, m, n) for (T i = (m), i##_max = (T)(n); i <= i##_max; ++(i))
#define TREPR(T, i, m, n) for (T i = (m), i##_min = (T)(n); i >= i##_min; --(i))
#define TREPD(T, i, m, n, d) for (T i = (m), i##_len = (T)(n); i < i##_len; i += (d))
#define TREPMD(T, i, m, n, d) for (T i = (m), i##_max = (T)(n); i <= i##_max; i += (d))

#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 REPIR(itr, ds) for (auto itr = ds.rbegin(); itr != ds.rend(); itr++)
#define ALL(x) begin(x), end(x)
#define SIZE(x) ((ll)(x).size())
#define ISIZE(x) ((int)(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 CEIL(a, b) (((a) + (b)-1) / (b))

#define endl '\n'

constexpr ll INF = 1'010'000'000'000'000'017LL;
constexpr int IINF = 1'000'000'007LL;
constexpr ll MOD = 1'000'000'007LL; // 1e9 + 7
// constexpr ll MOD = 998244353;
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, const 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, const 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, size_t _Nm> istream &operator>>(istream &is, array<T, _Nm> &arr) { // array 入力
    REP(i, 0, SIZE(arr)) is >> arr[i];
    return is;
}
template <typename T, size_t _Nm> ostream &operator<<(ostream &os, const array<T, _Nm> &arr) { // array 出力 (for dump)
    os << "{";
    REP(i, 0, SIZE(arr)) os << arr[i] << (i == i_len - 1 ? "" : ", ");
    os << "}";
    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, const 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, const 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, const map<T, U> &map_var) {
    return out_iter(os, map_var);
}
template <typename T, typename U> ostream &operator<<(ostream &os, const 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, const set<T> &set_var) { return out_iter(os, set_var); }
template <typename T> ostream &operator<<(ostream &os, const us<T> &set_var) { return out_iter(os, set_var); }
template <typename T> ostream &operator<<(ostream &os, const 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 << "}";
}

// tuple 出力
template <size_t N = 0, bool end_line = false, typename... Args> ostream &operator<<(ostream &os, tuple<Args...> &a) {
    if constexpr (N < std::tuple_size_v<tuple<Args...>>) {
        os << get<N>(a);
        if constexpr (N + 1 < std::tuple_size_v<tuple<Args...>>) {
            os << ' ';
        } else if constexpr (end_line) {
            os << '\n';
        }
        return operator<< <N + 1, end_line>(os, a);
    }
    return os;
}
template <typename... Args> void print_tuple(tuple<Args...> &a) { operator<< <0, true>(std::cout, a); }

void pprint() { std::cout << endl; }
template <class Head, class... Tail> void pprint(Head &&head, Tail &&...tail) {
    std::cout << head;
    if (sizeof...(Tail) > 0) std::cout << ' ';
    pprint(move(tail)...);
}

// 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
#ifndef ONLINE_JUDGE
#define DEBUG_
#endif

#ifndef MYLOCAL
#undef DEBUG_
#endif

#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

#define VAR(type, ...)                                                                                                 \
    type __VA_ARGS__;                                                                                                  \
    assert((std::cin >> __VA_ARGS__));

template <typename T> istream &operator,(istream &is, T &rhs) { return is >> rhs; }
template <typename T> ostream &operator,(ostream &os, const T &rhs) { return os << ' ' << rhs; }

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

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

template <typename T> constexpr void operator--(vc<T> &v, int) noexcept {
    for (int i = 0; i < ISIZE(v); ++i) v[i]--;
}
template <typename T> constexpr void operator++(vc<T> &v, int) noexcept {
    for (int i = 0; i < ISIZE(v); ++i) v[i]++;
}

/* #endregion */

// #include <atcoder/all>
// using namespace atcoder;

template <typename T = ll> class Rand {
    using dist_type = std::uniform_int_distribution<T>;

    T _lb;
    T _ub;
    // std::random_device rd; // Will be used to obtain a seed for the random number engine
    int rd;
    std::mt19937_64 gen; // Standard mersenne_twister_engine seeded with rd()
    dist_type dis;

  public:
    Rand(T lb, T ub) : _lb(lb), _ub(ub), rd(123456), gen(rd), dis(lb, ub) {}
    inline T operator()() noexcept { return dis(gen); }
    inline void set_param(T lb, T ub) noexcept {
        if (lb == _lb && ub == _ub) return;
        _lb = lb, _ub = ub;
        typename dist_type::param_type param(lb, ub);
        dis.param(param);
    }
};

template <size_t N = 64ull> string to_bin(ll x, bool show_base = false) {
    std::stringstream ss;
    if (show_base) ss << "0b";
    ss << std::bitset<N>(x);
    std::string s = ss.str();
    return s;
}

constexpr int N = 50;
constexpr int M = 20;

// Problem
void solve() {
    VAR(ll, n, m);
    assert(n == N);
    assert(m == M);
    vc<string> A(n);
    cin >> A;
    vll c(m), l(m);
    vvll a(m), b(m);
    REP(i, 0, m) {
        cin >> c[i], l[i];
        // dump(i, c[i], l[i]);
        a[i].resize(l[i]);
        b[i].resize(l[i]);
        REP(j, 0, l[i]) cin >> a[i][j], b[i][j];
    }

    // ボード準備
    array<ull, N> board;
    fill(ALL(board), 0ull);
    REP(i, 0, n) REP(j, 0, n) {
        // dump(i, j);
        if (A[i][j] != '.') {
            board[i] |= (1ull << j);
        }
        // dump(to_bin<50>(board[i]));
    }
    // const ull mask = (1ull << N) - 1ull;

    // 爆弾準備
    constexpr ll offset = 20;
    array<array<ull, 41>, M> bombs;
    REP(i, 0, m) {
        fill(ALL(bombs[i]), 0ull);
        // offset を足した位置にする
        REP(j, 0, l[i]) {
            const ll row = offset + a[i][j];
            const ll col = offset + b[i][j];
            bombs[i][row] |= (1ull << col);
        }
    }

    // 50x50 の盤面，20 種類の爆弾
    // なるべく地元の爆弾屋から仕入れたい．
    // なるべく少ない爆弾でやりくりしたい．
    // 3000ms あるので解の改善もできるか．

    // まずは，どこで何を爆破させるのが得か，調べる．
    // sum(#,@)/c[i] が大きい位置・爆弾種類を調べる．

    vc<array<ll, 3>> rcbs;
    while (true) {
        // 効果的な爆弾を探す
        ld max_score = 0;
        ll argmax_row_center = -1;
        ll argmax_col_center = -1;
        ll argmax_bomb = -1;
        REP(row_center, 0, N) REP(col_center, 0, N) {
            REP(i, 0, m) {
                ld score = 0;
                // 行 [row_center-20] が bombs[i][0] と対応する
                // 列 [col_center-20] が bombs[i][0]&1 と対応する
                REP(row, max(0LL, row_center - 20), min(n, row_center + 21)) {
                    const ll row_idx = row - (row_center - 20);
                    if (col_center > 20) {
                        const ull bit = board[row] & (bombs[i][row_idx] << (col_center - 20));
                        score += __builtin_popcountll(bit);
                    } else {
                        const ull bit = board[row] & (bombs[i][row_idx] >> (20 - col_center));
                        score += __builtin_popcountll(bit);
                    }
                }
                score /= c[i];
                if (chmax(max_score, score)) {
                    argmax_row_center = row_center;
                    argmax_col_center = col_center;
                    argmax_bomb = i;
                }
            }
        }
        // dump(max_score, argmax_row_center, argmax_col_center, argmax_bomb, max_score * c[argmax_bomb]);
        assert(argmax_bomb != -1);
        rcbs.push_back({argmax_row_center, argmax_col_center, argmax_bomb});

        // 爆弾を適用する
        {
            REP(row, max(0LL, argmax_row_center - 20), min(n, argmax_row_center + 21)) {
                const ll row_idx = row - (argmax_row_center - 20);
                if (argmax_col_center > 20) {
                    const ull bit = board[row] & (bombs[argmax_bomb][row_idx] << (argmax_col_center - 20));
                    board[row] ^= bit;
                } else {
                    const ull bit = board[row] & (bombs[argmax_bomb][row_idx] >> (20 - argmax_col_center));
                    board[row] ^= bit;
                }
            }
        }
        // 残り破壊対象を数える
        {
            ll obj_count = 0;
            REP(row, 0, n) {
                obj_count += __builtin_popcountll(board[row]); //
            }
            // dump(obj_count);
            if (obj_count == 0) break;
        }
        // break;
    }
    rcbs.insert(rcbs.begin(), array<ll, 3>{0, 0, -1});
    // dump(rcbs);
    // dump(SIZE(rcbs));

    auto cdist = [](array<ll, 3> &p0, array<ll, 3> &p1) -> ll {
        return abs(p1[0] - p0[0]) + abs(p1[1] - p0[1]); //
    };
    // // debug
    // {
    //     ll sum = 0;
    //     REP(i, 0, SIZE(rcbs) - 2) { sum += cdist(rcbs[i], rcbs[i + 1]); }
    //     dump(sum);
    // }

    // TSP として解く
    // 2-opt
    Rand<int> rand(0, SIZE(rcbs) - 2);
    REP(cnt, 0, 10000) {
        int r0 = rand();
        int r1 = rand();
        while (r0 == r1) r1 = rand();
        if (r0 > r1) swap(r0, r1);
        assert(r0 < r1);
        if (r0 + 1 == r1) continue;
        // assert: 隣接していない辺同士を swap したい

        auto from0 = rcbs[r0];
        auto to0 = rcbs[r0 + 1];
        auto from1 = rcbs[r1];
        auto to1 = rcbs[r1 + 1];
        int dist_old = cdist(from0, to0) + cdist(from1, to1);
        int dist_new = cdist(from0, from1) + cdist(to0, to1);
        if (dist_new < dist_old) {
            reverse(rcbs.begin() + r0 + 1, rcbs.begin() + r1 + 1);
            // // debug
            // {
            //     ll sum = 0;
            //     REP(i, 0, SIZE(rcbs) - 2) { sum += cdist(rcbs[i], rcbs[i + 1]); }
            //     dump(cnt, sum);
            // }
        }
    }
    // dump(rcbs);
    // dump(SIZE(rcbs));

    // できるだけ直前まで残っている店で爆弾を仕入れるようにする
    array<ull, N> board_shop;
    fill(ALL(board_shop), 0ull);
    fill(ALL(board), 0ull);
    REP(i, 0, n) REP(j, 0, n) {
        // dump(i, j);
        if (A[i][j] != '.') {
            board[i] |= (1ull << j);
        }
        if (A[i][j] == '@') {
            board_shop[i] |= (1ull << j);
        }
        // dump(to_bin<50>(board[i]));
    }
    vc<array<ll, 3>> operations;
    REP(i, 1, SIZE(rcbs)) {
        // if (i == 2) {
        //     REP(row, 0, n) {
        //         dump(row, to_bin<50>(board_shop[row])); //
        //     }
        // }
        // rcbs[i-1] 〜 rcbs[i] の間で店に寄るとして，どこに寄るのが最善か？
        // const auto [r0, c0, b0] = rcbs[i - 1];
        // const auto [r1, c1, b1] = rcbs[i];
        ll min_dist = IINF;
        ll argmin_row = -1;
        ll argmin_col = -1;
        REP(row, 0, n) REP(col, 0, n) {
            if ((board_shop[row] >> col) & 1) {
                array<ll, 3> t{row, col, -1};
                // const ll dist = cdist(rcbs[i - 1], t) + cdist(rcbs[i], t);
                const ll dist = cdist(rcbs[i], t);
                if (chmin(min_dist, dist)) {
                    argmin_row = row;
                    argmin_col = col;
                }
            }
        }
        if (argmin_row != -1) {
            assert(argmin_col != -1);
            operations.push_back({argmin_row, argmin_col, -10000 - min_dist});
        }
        operations.push_back(rcbs[i]);

        // 爆弾適用
        const auto [argmax_row_center, argmax_col_center, argmax_bomb] = rcbs[i];
        REP(row, max(0LL, argmax_row_center - 20), min(n, argmax_row_center + 21)) {
            const ll row_idx = row - (argmax_row_center - 20);
            if (argmax_col_center > 20) {
                const ull bit = board[row] & (bombs[argmax_bomb][row_idx] << (argmax_col_center - 20));
                board[row] ^= bit;
                const ull bit_shop = board_shop[row] & (bombs[argmax_bomb][row_idx] << (argmax_col_center - 20));
                board_shop[row] ^= bit_shop;
                if (i == 2) {
                    dump(row, bit_shop);
                }
            } else {
                const ull bit = board[row] & (bombs[argmax_bomb][row_idx] >> (20 - argmax_col_center));
                board[row] ^= bit;
                const ull bit_shop = board_shop[row] & (bombs[argmax_bomb][row_idx] >> (20 - argmax_col_center));
                board_shop[row] ^= bit_shop;
                // if (i == 2) {
                //     dump(row, bit_shop, row_idx, to_bin<50>(bombs[argmax_bomb][row_idx]), (20 - argmax_col_center));
                //     if (row == 10) {
                //         dump(row_idx, argmax_bomb);
                //     }
                // }
            }
        }
        // if (i == 2) {
        //     REP(row, 0, n) {
        //         dump(row, to_bin<50>(board_shop[row])); //
        //     }
        // }
    }
    // dump(operations);
    // dump(SIZE(operations));

    // 店の訪問時に，どの操作で使う爆弾を仕入れるか調べる
    vvll op2idx(SIZE(operations));
    vll stock;
    REPR(i, SIZE(operations) - 1, 0) {
        if (operations[i][2] >= 0) { // 爆弾を使用する操作
            stock.push_back(i);
        } else { // 爆弾を購入する操作
            op2idx[i] = stock;
            stock.clear();
        }
    }
    // dump(op2idx);
    // return;

    ll row = 0;
    ll col = 0;
    vc<string> ans;
    REP(i, 0, SIZE(operations)) {
        if (operations[i][2] >= 0) { // 爆弾を使用する操作
            // 移動する
            while (row < operations[i][0]) {
                row++;
                ans.push_back("1 D");
            }
            while (row > operations[i][0]) {
                row--;
                ans.push_back("1 U");
            }
            while (col < operations[i][1]) {
                col++;
                ans.push_back("1 R");
            }
            while (col > operations[i][1]) {
                col--;
                ans.push_back("1 L");
            }
            // ans.push_back("# " + to_string(row) + ", " + to_string(col));
            // 爆弾を使用する
            ans.push_back("3 " + to_string(operations[i][2] + 1));
        } else { // 爆弾を購入する操作
            if (SIZE(op2idx[i]) == 0) continue;
            // 移動する
            while (row < operations[i][0]) {
                row++;
                ans.push_back("1 D");
            }
            while (row > operations[i][0]) {
                row--;
                ans.push_back("1 U");
            }
            while (col < operations[i][1]) {
                col++;
                ans.push_back("1 R");
            }
            while (col > operations[i][1]) {
                col--;
                ans.push_back("1 L");
            }
            // ans.push_back("# " + to_string(row) + ", " + to_string(col));
            // 爆弾を購入する
            for (const ll idx : op2idx[i]) {
                ans.push_back("2 " + to_string(operations[idx][2] + 1));
            }
        }
    }
    pprint(SIZE(ans));
    for (const string &line : ans) {
        pprint(line); //
    }
}

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

結果

テストケース

ソースコード
