結果

問題 No.5019 Hakai Project
ユーザー wanuiwanui
提出日時 2023-11-18 13:06:12
言語 C++17
(gcc 12.3.0 + boost 1.83.0)
結果
AC  
実行時間 2,783 ms / 3,000 ms
コード長 23,840 bytes
コンパイル時間 4,399 ms
コンパイル使用メモリ 261,428 KB
実行使用メモリ 141,816 KB
スコア 2,769,421,873
最終ジャッジ日時 2023-11-18 13:08:39
合計ジャッジ時間 143,923 ms
ジャッジサーバーID
(参考情報)
judge12 / 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
(要ログイン)

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 2,570 ms
129,012 KB
testcase_01 AC 2,606 ms
125,684 KB
testcase_02 AC 2,653 ms
141,816 KB
testcase_03 AC 2,559 ms
100,212 KB
testcase_04 AC 2,601 ms
127,476 KB
testcase_05 AC 2,610 ms
115,316 KB
testcase_06 AC 2,633 ms
101,744 KB
testcase_07 AC 2,671 ms
130,036 KB
testcase_08 AC 2,593 ms
118,640 KB
testcase_09 AC 2,783 ms
125,428 KB
testcase_10 AC 2,655 ms
94,324 KB
testcase_11 AC 2,677 ms
117,620 KB
testcase_12 AC 2,602 ms
112,116 KB
testcase_13 AC 2,603 ms
113,648 KB
testcase_14 AC 2,671 ms
117,752 KB
testcase_15 AC 2,607 ms
95,984 KB
testcase_16 AC 2,596 ms
116,720 KB
testcase_17 AC 2,731 ms
118,008 KB
testcase_18 AC 2,776 ms
111,984 KB
testcase_19 AC 2,665 ms
115,444 KB
testcase_20 AC 2,610 ms
119,156 KB
testcase_21 AC 2,686 ms
119,540 KB
testcase_22 AC 2,598 ms
106,744 KB
testcase_23 AC 2,669 ms
117,876 KB
testcase_24 AC 2,636 ms
140,024 KB
testcase_25 AC 2,724 ms
113,396 KB
testcase_26 AC 2,664 ms
124,016 KB
testcase_27 AC 2,598 ms
127,096 KB
testcase_28 AC 2,597 ms
106,356 KB
testcase_29 AC 2,626 ms
102,648 KB
testcase_30 AC 2,581 ms
108,268 KB
testcase_31 AC 2,651 ms
95,472 KB
testcase_32 AC 2,706 ms
105,584 KB
testcase_33 AC 2,538 ms
131,444 KB
testcase_34 AC 2,676 ms
117,488 KB
testcase_35 AC 2,604 ms
107,636 KB
testcase_36 AC 2,568 ms
107,248 KB
testcase_37 AC 2,614 ms
97,392 KB
testcase_38 AC 2,630 ms
87,272 KB
testcase_39 AC 2,632 ms
135,164 KB
testcase_40 AC 2,640 ms
124,272 KB
testcase_41 AC 2,666 ms
133,364 KB
testcase_42 AC 2,585 ms
107,892 KB
testcase_43 AC 2,592 ms
140,024 KB
testcase_44 AC 2,657 ms
113,652 KB
testcase_45 AC 2,594 ms
98,928 KB
testcase_46 AC 2,688 ms
119,672 KB
testcase_47 AC 2,575 ms
120,560 KB
testcase_48 AC 2,607 ms
114,164 KB
testcase_49 AC 2,700 ms
123,128 KB
権限があれば一括ダウンロードができます
コンパイルメッセージ
main.cpp: In function 'int getmove(point, point)':
main.cpp:112:1: warning: control reaches end of non-void function [-Wreturn-type]
  112 | }
      | ^

ソースコード

diff #

#include <bits/stdc++.h>
// clang-format off
using namespace std; using ll=long long; using ull=unsigned long long; using pll=pair<ll,ll>; const ll INF=4e18;
void print0(){}; template<typename H,typename... T> void print0(H h,T... t){cout<<h;print0(t...);}
void print(){print0("\n");}; template<typename H,typename... T>void print(H h,T... t){print0(h);if(sizeof...(T)>0)print0(" ");print(t...);}
#define debug1(a) { cerr<<#a<<":"<<a<<endl; }
#define debug2(a,b) { cerr<<#a<<":"<<a<<" "<<#b<<":"<<b<<endl; }
#define debug3(a,b,c) { cerr<<#a<<":"<<a<<" "<<#b<<":"<<b<<" "<<#c<<":"<<c<<endl; }
#define debug4(a,b,c,d) { cerr<<#a<<":"<<a<<" "<<#b<<":"<<b<<" "<<#c<<":"<<c<<" "<<#d<<":"<<d<<endl; }

struct point {int r; int c; };
bool operator==(const point &lhs, const point &rhs) { return (lhs.r == rhs.r && lhs.c == rhs.c); }
bool operator!=(const point &lhs, const point &rhs) { return !(lhs == rhs); }
bool operator<(const point &lhs, const point &rhs) {
    if (lhs.r != rhs.r){return lhs.r<rhs.r;}
    return lhs.c<rhs.c;
}
point operator-(const point &self){
    return {-self.r, -self.c};
}
point operator+(const point &lhs, const point &rhs){
    return {lhs.r+rhs.r, lhs.c+rhs.c};
}
point operator-(const point &lhs, const point &rhs){
    return lhs + (-rhs);
}
std::ostream &operator<<(std::ostream &os, point &pt) {
    string s;
    s = "(" + to_string(int(pt.r)) + ", " + to_string(int(pt.c)) + ")";
    return os << s;
};
const int inf = 1e9;
using pii = pair<int, int>;
// clang-format on
namespace marathon {
mt19937 engine(0);
clock_t start_time;
double now() {
    return 1000.0 * (clock() - start_time) / CLOCKS_PER_SEC;
}
void marathon_init() {
    start_time = clock();
    random_device seed_gen;
    engine.seed(seed_gen());
}
int randint(int mn, int mx) {
    int rng = mx - mn + 1;
    return mn + (engine() % rng);
}
double uniform(double x, double y) {
    const int RND = 1e8;
    double mean = (x + y) / 2.0;
    double dif = y - mean;
    double p = double(engine() % RND) / RND;
    return mean + dif * (1.0 - 2.0 * p);
}
template <typename T>
T random_choice(vector<T> &vec) {
    return vec[engine() % vec.size()];
}
bool anneal_accept(double new_score, double old_score, double cur_time, double begin_time, double end_time, double begin_temp, double end_temp) {
    static int called = 0;
    static double temp = 0;
    if ((called & 127) == 0) {
        double ratio = (cur_time - begin_time) / (end_time - begin_time);
        ratio = min(ratio, 1.0);
        temp = pow(begin_temp, 1.0 - ratio) * pow(end_temp, ratio);
    }
    called++;

    const int ANNEAL_RND = 1e8;
    const double ANNEAL_EPS = 1e-6;

    return (exp((new_score - old_score) / temp) > double(engine() % ANNEAL_RND) / ANNEAL_RND + ANNEAL_EPS);
}
}  // namespace marathon
struct operation_t {
    int kind;
    int xyz;
};
struct bomb_t {
    int cost;
    vector<point> ranges;
};
const int _U_ = 0;
const int _R_ = 1;
const int _D_ = 2;
const int _L_ = 3;
const int N = 50;
const int M = 20;
const int N2 = 2500;
vector<point> mvs = {{-1, 0}, {0, 1}, {1, 0}, {0, -1}};
using bsn2 = bitset<N2>;
vector<vector<int>> mvtbl(N2);
bsn2 break_bomb_bs[N][N][M];
char TBL_INIT[N][N];
bomb_t BOMBS[M];
int getmove(point src, point dest) {
    assert(abs(src.r - dest.r) + abs(src.c - dest.c) == 1);
    if (src.r < dest.r) {
        return _D_;
    }
    if (src.r > dest.r) {
        return _U_;
    }
    if (src.c < dest.c) {
        return _R_;
    }
    if (src.c > dest.c) {
        return _L_;
    }
}
bool ingrid(int i, int j) {
    return 0 <= i && i < N && 0 <= j && j < N;
}
bool ingrid(point p) {
    return ingrid(p.r, p.c);
}
int _p(int r, int c) {
    return r * N + c;
}
int _p(point p) {
    return _p(p.r, p.c);
}

void init_data() {
    for (int r = 0; r < N; r++) {
        for (int c = 0; c < N; c++) {
            point u = {r, c};
            for (auto mv : mvs) {
                auto v = mv + u;
                if (!ingrid(v)) continue;
                mvtbl[_p(u)].push_back(_p(v));
            }
        }
    }
    for (int r = 0; r < N; r++) {
        for (int c = 0; c < N; c++) {
            for (int bid = 0; bid < M; bid++) {
                break_bomb_bs[r][c][bid] = 0;
                point now = {r, c};
                for (auto drc : BOMBS[bid].ranges) {
                    point pt = now + drc;
                    if (!ingrid(pt)) continue;
                    break_bomb_bs[r][c][bid][_p(pt)] = 1;
                }
            }
        }
    }
}
vector<vector<int>> dij_cost(point ini, vector<vector<char>> &tbl) {
    // コスト上限が400くらいなのでpriority_queue不要
    vector<char> tbl_(N2);
    for (int r = 0; r < N; r++) {
        for (int c = 0; c < N; c++) {
            tbl_[_p(r, c)] = tbl[r][c];
        }
    }
    vector<int> costs(N2, inf);
    vector<vector<int>> cost_points(N * 4);
    cost_points[0].push_back(_p(ini));
    costs[_p(ini)] = 0;
    for (int cost = 0; cost < N * 4; cost++) {
        for (auto u : cost_points[cost]) {
            for (auto v : mvtbl[u]) {
                int nc = cost + 1;
                if (tbl_[v] != '.') {
                    nc = cost + 2;
                }
                if (costs[v] <= nc) continue;
                costs[v] = nc;
                cost_points[nc].push_back(v);
            }
        }
    }
    vector<vector<int>> result(N, vector<int>(N));
    for (int r = 0; r < N; r++) {
        for (int c = 0; c < N; c++) {
            result[r][c] = costs[_p(r, c)];
        }
    }
    return result;
}
void dij_goto_ops(point &hulk, point dest, vector<operation_t> &ops, vector<vector<char>> &tbl) {
    priority_queue<tuple<int, point, point>, vector<tuple<int, point, point>>, greater<tuple<int, point, point>>> pq;
    pq.push({0, hulk, {-1, -1}});
    vector<vector<int>> costs(N, vector<int>(N, inf));
    vector<vector<point>> froms(N, vector<point>(N, {-1, -1}));
    while (pq.size()) {
        int cost;
        point u, frm;
        tie(cost, u, frm) = pq.top();
        pq.pop();
        if (costs[u.r][u.c] <= cost) continue;
        costs[u.r][u.c] = cost;
        froms[u.r][u.c] = frm;
        if (u == dest) break;
        for (auto mv : mvs) {
            point v = mv + u;
            if (!ingrid(v)) continue;
            int nc = cost + 1;
            if (tbl[v.r][v.c] != '.') {
                nc = cost + 2;
            }
            pq.push({nc, v, u});
        }
    }
    {
        point cur = dest;
        vector<point> route;
        while (true) {
            route.push_back(cur);
            if (cur == hulk) break;
            cur = froms[cur.r][cur.c];
        }
        reverse(route.begin(), route.end());
        for (int i = 1; i < int(route.size()); i++) {
            point pre = route[i - 1];
            point nxt = route[i];
            int mvid = getmove(pre, nxt);
            ops.push_back({1, mvid});
        }
    }
    hulk = dest;
}
pii evaluate_ops(vector<operation_t> &ops) {
    vector<vector<char>> tbl(N, vector<char>(N));
    for (int r = 0; r < N; r++) {
        for (int c = 0; c < N; c++) {
            tbl[r][c] = TBL_INIT[r][c];
        }
    }
    int move_cost = 0;
    int bomb_cost = 0;
    point hulk = {0, 0};
    int bombs = 0;
    for (auto op : ops) {
        if (op.kind == 1) {
            hulk = hulk + mvs[op.xyz];
            if (tbl[hulk.r][hulk.c] == '.') {
                move_cost += (1 + bombs) * (1 + bombs);
            } else {
                move_cost += 2 * (1 + bombs) * (1 + bombs);
            }
        } else if (op.kind == 2) {
            bombs++;
            int bombid = op.xyz;
            bomb_cost += BOMBS[bombid].cost;
        } else {
            bombs--;  // WAにはならない前提
            int bombid = op.xyz;
            for (auto drc : BOMBS[bombid].ranges) {
                point pt = hulk + drc;
                if (!ingrid(pt)) continue;
                tbl[pt.r][pt.c] = '.';
            }
        }
    }
    return {move_cost, bomb_cost};
}
int bomb_place_id(point p, int b) {
    return b * N * N + p.r * N + p.c;
}
int bpid2bombid(int bpid) {
    return bpid / N2;
}
point bpid2point(int bpid) {
    return point{(bpid / N) % N, bpid % N};
}
vector<int> hc_bomb_places(vector<int> init_bomb_places, vector<int> init_fillcnt, vector<vector<int>> bpid2walls, vector<vector<int>> wall2bpids) {
    // 破壊再構築系の山登り
    vector<int> bpid2cost(N * N * M);
    for (int bpid = 0; bpid < N * N * M; bpid++) {
        bpid2cost[bpid] = BOMBS[bpid2bombid(bpid)].cost;
    }

    int old_score = 0;
    auto bomb_places = init_bomb_places;
    auto fillcnt = init_fillcnt;
    for (auto bpid : bomb_places) {
        old_score += -bpid2cost[bpid];
    }
    double begin_time = marathon::now();
    double end_time = begin_time + 1000;

    int hc_iter = 0;
    int hc_accept = 0;
    static uint16_t bpid_cnt[N * N * M];
    while (marathon::now() < end_time) {
        hc_iter++;
        vector<int> new_bomb_places = bomb_places;
        auto new_fillcnt = fillcnt;
        vector<int> notfilled;
        int new_score = old_score;

        int rmnum = marathon::randint(4, 6);
        for (int r = 0; r < rmnum; r++) {
            int remove_bpid = marathon::random_choice(new_bomb_places);
            new_bomb_places.erase(std::remove(new_bomb_places.begin(), new_bomb_places.end(), remove_bpid), new_bomb_places.end());
            new_score += bpid2cost[remove_bpid];
            for (int pt : bpid2walls[remove_bpid]) {
                new_fillcnt[pt]--;
                if (new_fillcnt[pt] == 0) notfilled.push_back(pt);
            }
        }

        while (notfilled.size()) {  // この中の処理が非常に重い

            for (int bpid = 0; bpid < N * N * M; bpid++) {
                bpid_cnt[bpid] = 0;
            }

            for (auto wall : notfilled) {
                for (auto bpid : wall2bpids[wall]) {
                    bpid_cnt[bpid]++;
                }
            }

            int bestbpid = 0;
            int bestscore = -inf;
            for (int bpid = 0; bpid < N * N * M; bpid++) {
                if (bpid_cnt[bpid] > 0) {
                    // int score = -1000 * marathon::uniform(1.0, 2.0) * bpid2cost[bpid] / bpid_cnt[bpid];
                    int score = -1000 * bpid2cost[bpid] / bpid_cnt[bpid];
                    if (bestscore < score) {
                        bestscore = score;
                        bestbpid = bpid;
                    }
                }
            }

            for (auto wall : bpid2walls[bestbpid]) {
                new_fillcnt[wall]++;
                if (new_fillcnt[wall] == 1) {
                    notfilled.erase(std::remove(notfilled.begin(), notfilled.end(), wall), notfilled.end());
                }
            }
            new_score -= bpid2cost[bestbpid];
            new_bomb_places.push_back(bestbpid);
        }
        if (new_score > old_score) {
            old_score = new_score;
            bomb_places = new_bomb_places;
            fillcnt = new_fillcnt;
            hc_accept++;
        }
    }
    debug2(hc_iter, hc_accept);
    return bomb_places;
}

vector<int> make_bomb_places() {
    // 詰み防止のため建物がなくなるまで破壊してはいけない店舗を1個だけ決めておく
    vector<bool> is_hub_shop(N2);
    {
        point center = {12, 12};
        pair<int, point> minshop = {inf, {-1, -1}};
        for (int r = 0; r < N; r++) {
            for (int c = 0; c < N; c++) {
                if (TBL_INIT[r][c] == '@') {
                    point now = {r, c};
                    int distance = abs(center.r - now.r) + abs(center.c - now.c);
                    minshop = min(minshop, {distance, now});
                }
            }
        }
        is_hub_shop[_p(minshop.second)] = true;
    }

    vector<vector<int>> wall2bpids(N2);  // buildingと書くのがタイプ数多いのでwallとしておく
    vector<vector<int>> bpid2walls(N * N * M);
    for (int r = 0; r < N; r++) {
        for (int c = 0; c < N; c++) {
            for (int b = 0; b < M; b++) {
                point place = point{r, c};
                int bpid = bomb_place_id(place, b);
                // ハブ店を破壊する爆弾配置は除外する
                bool valid = true;
                for (auto drc : BOMBS[b].ranges) {
                    point pt = place + drc;
                    if (!ingrid(pt)) continue;
                    if (is_hub_shop[_p(pt)]) valid = false;
                }
                if (!valid) continue;
                for (auto drc : BOMBS[b].ranges) {
                    point pt = place + drc;
                    if (!ingrid(pt)) continue;
                    if (TBL_INIT[pt.r][pt.c] != '#') continue;
                    bpid2walls[bpid].push_back(_p(pt));
                    wall2bpids[_p(pt)].push_back(bpid);
                }
            }
        }
    }

    // 適当な初期解
    vector<int> bomb_places;
    vector<int> fillcnt(N2);
    {
        while (true) {
            pair<double, int> bestbpid = {-inf, -inf};
            for (int bpid = 0; bpid < N * N * M; bpid++) {
                int cnt = 0;
                for (auto wall : bpid2walls[bpid]) {
                    if (fillcnt[wall] == 0) cnt++;
                }
                if (cnt > 0) {
                    double score = -1.0 * BOMBS[bpid2bombid(bpid)].cost / cnt;
                    bestbpid = max(bestbpid, {score, bpid});
                }
            }
            if (bestbpid.second == -inf) break;
            bomb_places.push_back(bestbpid.second);
            for (auto wall : bpid2walls[bestbpid.second]) {
                fillcnt[wall]++;
            }
        }
    }
    return hc_bomb_places(bomb_places, fillcnt, bpid2walls, wall2bpids);
}
double calc_tsp_cost(vector<int> &route, vector<int> &bomb_places) {
    point hulk = {0, 0};
    vector<vector<char>> tbl(N, vector<char>(N));
    for (int r = 0; r < N; r++) {
        for (int c = 0; c < N; c++) {
            tbl[r][c] = TBL_INIT[r][c];
        }
    }
    int cost = 0;
    int m = route.size();
    for (int r = 1; r < int(route.size()) - 1; r++) {
        int bpid = bomb_places[route[r]];
        point bombpt = bpid2point(bpid);
        auto cost_hulk = dij_cost(hulk, tbl);
        auto cost_bomb = dij_cost(bombpt, tbl);
        int now_mincost = inf;
        for (int r = 0; r < N; r++) {
            for (int c = 0; c < N; c++) {
                if (tbl[r][c] == '@') {
                    now_mincost = min(now_mincost, cost_hulk[r][c] + cost_bomb[r][c] * 4);
                }
            }
        }

        for (auto drc : BOMBS[bpid2bombid(bpid)].ranges) {
            point pt = bombpt + drc;
            if (!ingrid(pt)) continue;
            tbl[pt.r][pt.c] = '.';
        }
        cost += now_mincost;
        hulk = bombpt;
    }
    return cost;
}
vector<int> bomb_places_tsp(vector<int> bomb_places) {
    int m = bomb_places.size() + 2;

    int start = m - 2;
    int goal = m - 1;
    vector<int> best_route;
    double best_score = -1e18;
    int route_search_iter = 0;
    while (marathon::now() < 2400) {
        route_search_iter++;
        // コスト固定のTSP
        vector<int> route;
        route.push_back(start);
        {
            vector<int> perm(m - 2);
            iota(perm.begin(), perm.end(), 0);
            shuffle(perm.begin(), perm.end(), marathon::engine);
            for (auto r : perm) {
                route.push_back(r);
            }
        }
        route.push_back(goal);

        point ini = {0, 0};
        vector<vector<int>> costtbl(m, vector<int>(m));
        for (int i = 0; i < m - 1; i++) {
            for (int j = 0; j < m - 1; j++) {
                point src = i == start ? ini : bpid2point(bomb_places[i]);
                point dest = i == start ? ini : bpid2point(bomb_places[j]);
                costtbl[i][j] = abs(src.r - dest.r) + abs(src.c - dest.c);
            }
        }

        double begin_temp = 5;
        double end_temp = 0.5;
        double old_score = 0;
        for (int r = 1; r < int(route.size()); r++) {
            old_score -= costtbl[route[r - 1]][route[r]];
        }
        int anneal_accepted = 0;
        int anneal_iter = 0;
        while (anneal_iter < 50000) {
            anneal_iter++;
            vector<int> new_route = route;
            int x = 0;
            int y = 0;
            while (x == y) {
                x = 1 + marathon::engine() % (int(new_route.size()) - 2);
                y = 1 + marathon::engine() % (int(new_route.size()) - 2);
            }
            if (x > y) {
                swap(x, y);
            }
            for (int i = x + 1; i <= y - 1; i++) {
                int j = y - 1 - (i - (x + 1));
                if (i > j) break;
                swap(new_route[i], new_route[j]);
            }

            double new_score = 0;
            for (int r = 1; r < int(new_route.size()); r++) {
                new_score -= costtbl[new_route[r - 1]][new_route[r]];
            }
            if (marathon::anneal_accept(new_score, old_score, anneal_iter, 0, 50000, begin_temp, end_temp)) {
                route = new_route;
                old_score = new_score;
                anneal_accepted++;
            }
        }

        // 正しいコストで評価
        double now_score = -calc_tsp_cost(route, bomb_places);
        if (best_score < now_score) {
            best_route = route;
            best_score = now_score;
            debug1(best_score);
        }
    }
    debug2(route_search_iter, best_score);
    vector<int> result;
    for (int r = 1; r < int(best_route.size()) - 1; r++) {
        result.push_back(bomb_places[best_route[r]]);
    }
    return result;
}
void solve() {
    // 爆弾位置と爆弾IDからなる「爆弾配置」 の集合を山登りにより作る。
    // 爆弾配置は N*N*M 種類存在し、そこから全ての建物を破壊しつつ爆弾コストが小さい集合を選ぶ。
    vector<int> bomb_places = make_bomb_places();

    vector<operation_t> ops;
    {
        point hulk = {0, 0};
        vector<vector<char>> tbl(N, vector<char>(N));
        for (int r = 0; r < N; r++) {
            for (int c = 0; c < N; c++) {
                tbl[r][c] = TBL_INIT[r][c];
            }
        }
        {
            // 爆弾配置が決まったら、コストが動的に変化するTSP的な問題を解く。 
            bomb_places = bomb_places_tsp(bomb_places);
            for (auto bpid : bomb_places) {
                point midshop = {-1, -1};
                {
                    // TODO 2個同時に運ぶのをDP的にやるとよい可能性がある
                    auto hulk_cost = dij_cost(hulk, tbl);
                    auto bp_cost = dij_cost(bpid2point(bpid), tbl);
                    pair<int, point> bestmidshop = {inf, {inf, inf}};
                    for (int r = 0; r < N; r++) {
                        for (int c = 0; c < N; c++) {
                            if (tbl[r][c] == '@') {
                                int cost = hulk_cost[r][c] + bp_cost[r][c] * 4;
                                pair<int, point> now = {cost, {r, c}};
                                bestmidshop = min(now, bestmidshop);
                            }
                        }
                    }
                    midshop = bestmidshop.second;
                }
                int bombid = bpid2bombid(bpid);
                point bombpt = bpid2point(bpid);
                dij_goto_ops(hulk, midshop, ops, tbl);
                ops.push_back({2, bombid});
                dij_goto_ops(hulk, bombpt, ops, tbl);
                ops.push_back({3, bombid});
                for (auto drc : BOMBS[bombid].ranges) {
                    point pt = hulk + drc;
                    if (!ingrid(pt)) continue;
                    tbl[pt.r][pt.c] = '.';
                }
            }
        }

        // 残った店を貪欲に破壊
        while (true) {
            vector<point> shops;
            for (int r = 0; r < N; r++) {
                for (int c = 0; c < N; c++) {
                    if (tbl[r][c] == '@') shops.push_back({r, c});
                }
            }
            if (shops.size() == 0) break;

            pair<double, int> bestop = {1e18, -1};
            auto hulk_cost = dij_cost(hulk, tbl);
            vector<vector<point>> midshop(N, vector<point>(N, {-1, -1}));
            vector<vector<int>> move_cost(N, vector<int>(N, inf));
            for (auto shop : shops) {
                auto shop_cost = dij_cost(shop, tbl);
                for (int r = 0; r < N; r++) {
                    for (int c = 0; c < N; c++) {
                        int cost = shop_cost[r][c] * 4 + hulk_cost[shop.r][shop.c];
                        if (move_cost[r][c] > cost) {
                            move_cost[r][c] = cost;
                            midshop[r][c] = shop;
                        }
                    }
                }
            }
            for (int r = 0; r < N; r++) {
                for (int c = 0; c < N; c++) {
                    point place = {r, c};
                    for (int bid = 0; bid < M; bid++) {
                        int break_shop = 0;
                        int break_hub_shop = 0;
                        for (auto drc : BOMBS[bid].ranges) {
                            point pt = place + drc;
                            if (!ingrid(pt)) continue;
                            if (tbl[pt.r][pt.c] == '@') break_shop++;
                        }
                        // (移動コスト+爆弾コスト)/破壊する店数  が最小の爆弾配置を選ぶ
                        double score = 1.0 * (move_cost[r][c] + BOMBS[bid].cost) / break_shop;
                        bestop = min(bestop, {score, bomb_place_id(place, bid)});
                    }
                }
            }
            {
                int bpid = bestop.second;
                int bombid = bpid / N2;
                point bombpt = bpid2point(bpid);
                dij_goto_ops(hulk, midshop[bombpt.r][bombpt.c], ops, tbl);
                ops.push_back({2, bombid});
                dij_goto_ops(hulk, bombpt, ops, tbl);
                ops.push_back({3, bombid});
                for (auto drc : BOMBS[bombid].ranges) {
                    point pt = hulk + drc;
                    if (!ingrid(pt)) continue;
                    tbl[pt.r][pt.c] = '.';
                }
            }
        }
    }
    {
        cout << ops.size() << endl;
        for (auto op : ops) {
            if (op.kind == 1) {
                char d = '.';
                if (op.xyz == _L_) d = 'L';
                if (op.xyz == _R_) d = 'R';
                if (op.xyz == _U_) d = 'U';
                if (op.xyz == _D_) d = 'D';
                cout << op.kind << " " << d << endl;
            } else {
                cout << op.kind << " " << op.xyz + 1 << endl;
            }
        }
    }
    {
        int move_cost, bomb_cost;
        tie(move_cost, bomb_cost) = evaluate_ops(ops);
        int totalcost = move_cost + bomb_cost;
        int score = 1e12 / (1e4 + totalcost);
        cerr << "score==" << score << " move_cost==" << move_cost << " bomb_cost==" << bomb_cost << " time==" << marathon::now() << endl;
    }
}
int main() {
    marathon::marathon_init();
    int n, m;
    cin >> n >> m;
    for (int r = 0; r < N; r++) {
        for (int c = 0; c < N; c++) {
            cin >> TBL_INIT[r][c];
        }
    }
    for (int b = 0; b < M; b++) {
        int c, l;
        cin >> c >> l;
        bomb_t bomb;
        bomb.cost = c;
        for (int i = 0; i < l; i++) {
            int dr, dc;
            cin >> dr >> dc;
            bomb.ranges.push_back({dr, dc});
        }
        BOMBS[b] = bomb;
    }
    init_data();
    solve();
}
0