#include // clang-format off using namespace std; using ll=long long; using ull=unsigned long long; using pll=pair; const ll INF=4e18; void print0(){}; template void print0(H h,T... t){cout<void print(H h,T... t){print0(h);if(sizeof...(T)>0)print0(" ");print(t...);} #define debug1(a) { cerr<<#a<<":"< T random_choice(vector &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) { const int ANNEAL_RND = 1e8; const double ANNEAL_EPS = 1e-6; double temp = (begin_temp * (end_time - cur_time) + end_temp * (cur_time - begin_time)) / (end_time - begin_time); 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 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; vector mvs = {{-1, 0}, {0, 1}, {1, 0}, {0, -1}}; 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); } vector> dijcost(point ini, vector> &tbl) { priority_queue, vector>, greater>> pq; pq.push({0, ini}); vector> costs(N, vector(N, inf)); while (pq.size()) { int cost; point u; tie(cost, u) = pq.top(); pq.pop(); if (costs[u.r][u.c] <= cost) continue; costs[u.r][u.c] = cost; 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; } // if (costs[v.r][v.c] <= nc) continue; // costs[v.r][v.c] = nc; pq.push({nc, v}); } } return costs; } void dij_goto(point &hulk, point dest, vector &ops, vector> &tbl) { priority_queue, vector>, greater>> pq; pq.push({0, hulk, {-1, -1}}); vector> costs(N, vector(N, inf)); vector> froms(N, vector(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 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; } void solve() { point hulk = {0, 0}; vector> tbl(N, vector(N)); for (int r = 0; r < N; r++) { for (int c = 0; c < N; c++) { tbl[r][c] = TBL_INIT[r][c]; } } vector ops; for (int breakloop = 0; true; breakloop++) { debug2(breakloop, marathon::now()); vector shops; vector walls; for (int r = 0; r < N; r++) { for (int c = 0; c < N; c++) { if (tbl[r][c] == '@') shops.push_back({r, c}); if (tbl[r][c] == '#') walls.push_back({r, c}); } } if (shops.size() == 0) break; // (移動コスト+爆弾コスト)/破壊個数 が一番小さい tuple bestop = {{-1, -1}, {-1, -1}, -1}; { double bestscore = -1e18; auto hulk_cost = dijcost(hulk, tbl); vector> midshop(N, vector(N, {-1, -1})); vector> move_cost(N, vector(N, inf)); for (auto shop : shops) { auto costs_from_shop = dijcost(shop, tbl); for (int r = 0; r < N; r++) { for (int c = 0; c < N; c++) { int cost = costs_from_shop[r][c] * 4 + hulk_cost[r][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 now = {r, c}; for (int bid = 0; bid < M; bid++) { int cost = move_cost[r][c] + BOMBS[bid].cost; int break_wall = 0; int break_shop = 0; for (auto drc : BOMBS[bid].ranges) { point pt = now + drc; if (!ingrid(pt)) continue; if (tbl[pt.r][pt.c] == '#') { break_wall++; } if (tbl[pt.r][pt.c] == '@') { break_shop++; } double score = 0; if (int(shops.size()) - break_shop >= 20) { if (break_wall == 0) continue; score = 1.0 * (-cost) / break_wall; } else if (shops.size() >= 2 && walls.size() > 0) { if (break_wall == 0) continue; score = 1.0 * (-cost - 10000 * break_shop) / break_wall; } else { if (break_wall + break_shop == 0) continue; // score = 1.0 * (break_wall + 0.01 * break_shop) / (break_wall + break_shop); score = 1.0 * (-cost) / (break_wall + break_shop); } if (bestscore < score) { bestscore = score; bestop = {now, midshop[now.r][now.c], bid}; } } } } } } { point midshop, bombpt; int bombid; tie(bombpt, midshop, bombid) = bestop; dij_goto(hulk, midshop, ops, tbl); ops.push_back({2, bombid}); dij_goto(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 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; } solve(); }