結果
問題 | No.2509 Beam Shateki |
ユーザー |
|
提出日時 | 2023-10-21 00:40:05 |
言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 975 ms / 2,000 ms |
コード長 | 6,508 bytes |
コンパイル時間 | 4,449 ms |
コンパイル使用メモリ | 263,124 KB |
最終ジャッジ日時 | 2025-02-17 11:51:07 |
ジャッジサーバーID (参考情報) |
judge2 / judge3 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 3 |
other | AC * 61 |
ソースコード
#ifndef HIDDEN_IN_VS // 折りたたみ用// 警告の抑制#define _CRT_SECURE_NO_WARNINGS// ライブラリの読み込み#include <bits/stdc++.h>using namespace std;// 型名の短縮using ll = long long; // -2^63 ~ 2^63 = 9 * 10^18(int は -2^31 ~ 2^31 = 2 * 10^9)using pii = pair<int, int>; using pll = pair<ll, ll>; using pil = pair<int, ll>; using pli = pair<ll, int>;using vi = vector<int>; using vvi = vector<vi>; using vvvi = vector<vvi>; using vvvvi = vector<vvvi>;using vl = vector<ll>; using vvl = vector<vl>; using vvvl = vector<vvl>; using vvvvl = vector<vvvl>;using vb = vector<bool>; using vvb = vector<vb>; using vvvb = vector<vvb>;using vc = vector<char>; using vvc = vector<vc>; using vvvc = vector<vvc>;using vd = vector<double>; using vvd = vector<vd>; using vvvd = vector<vvd>;template <class T> using priority_queue_rev = priority_queue<T, vector<T>, greater<T>>;using Graph = vvi;// 定数の定義const double PI = acos(-1);const vi DX = { 1, 0, -1, 0 }; // 4 近傍(下,右,上,左)const vi DY = { 0, 1, 0, -1 };int INF = 1001001001; ll INFL = 4004004003104004004LL; // (int)INFL = 1010931620;// 入出力高速化struct fast_io { fast_io() { cin.tie(nullptr); ios::sync_with_stdio(false); cout << fixed << setprecision(18); } } fastIOtmp;// 汎用マクロの定義#define all(a) (a).begin(), (a).end()#define sz(x) ((int)(x).size())#define lbpos(a, x) (int)distance((a).begin(), std::lower_bound(all(a), x))#define ubpos(a, x) (int)distance((a).begin(), std::upper_bound(all(a), x))#define Yes(b) {cout << ((b) ? "Yes\n" : "No\n");}#define rep(i, n) for(int i = 0, i##_len = int(n); i < i##_len; ++i) // 0 から n-1 まで昇順#define repi(i, s, t) for(int i = int(s), i##_end = int(t); i <= i##_end; ++i) // s から t まで昇順#define repir(i, s, t) for(int i = int(s), i##_end = int(t); i >= i##_end; --i) // s から t まで降順#define repe(v, a) for(const auto& v : (a)) // a の全要素(変更不可能)#define repea(v, a) for(auto& v : (a)) // a の全要素(変更可能)#define repb(set, d) for(int set = 0; set < (1 << int(d)); ++set) // d ビット全探索(昇順)#define repp(a) sort(all(a)); for(bool a##_perm = true; a##_perm; a##_perm = next_permutation(all(a))) // a の順列全て(昇順)#define smod(n, m) ((((n) % (m)) + (m)) % (m)) // 非負mod#define uniq(a) {sort(all(a)); (a).erase(unique(all(a)), (a).end());} // 重複除去#define EXIT(a) {cout << (a) << endl; exit(0);} // 強制終了#define inQ(x, y, u, l, d, r) ((u) <= (x) && (l) <= (y) && (x) < (d) && (y) < (r)) // 半開矩形内判定// 汎用関数の定義template <class T> inline ll pow(T n, int k) { ll v = 1; rep(i, k) v *= n; return v; }template <class T> inline bool chmax(T& M, const T& x) { if (M < x) { M = x; return true; } return false; } // 最大値を更新(更新されたら trueを返す)template <class T> inline bool chmin(T& m, const T& x) { if (m > x) { m = x; return true; } return false; } // 最小値を更新(更新されたら trueを返す)template <class T> inline T get(T set, int i) { return (set >> i) & T(1); }// 演算子オーバーロードtemplate <class T, class U> inline istream& operator>>(istream& is, pair<T, U>& p) { is >> p.first >> p.second; return is; }template <class T> inline istream& operator>>(istream& is, vector<T>& v) { repea(x, v) is >> x; return is; }template <class T> inline vector<T>& operator--(vector<T>& v) { repea(x, v) --x; return v; }template <class T> inline vector<T>& operator++(vector<T>& v) { repea(x, v) ++x; return v; }#endif // 折りたたみ用#if __has_include(<atcoder/all>)#include <atcoder/all>using namespace atcoder;#ifdef _MSC_VER#include "localACL.hpp"#endifusing mint = modint1000000007;//using mint = modint998244353;//using mint = modint; // mint::set_mod(m);namespace atcoder {inline istream& operator>>(istream& is, mint& x) { ll x_; is >> x_; x = x_; return is; }inline ostream& operator<<(ostream& os, const mint& x) { os << x.val(); return os; }}using vm = vector<mint>; using vvm = vector<vm>; using vvvm = vector<vvm>; using vvvvm = vector<vvvm>;#endif#ifdef _MSC_VER // 手元環境(Visual Studio)#include "local.hpp"#else // 提出用(gcc)inline int popcount(int n) { return __builtin_popcount(n); }inline int popcount(ll n) { return __builtin_popcountll(n); }inline int lsb(int n) { return n != 0 ? __builtin_ctz(n) : -1; }inline int lsb(ll n) { return n != 0 ? __builtin_ctzll(n) : -1; }inline int msb(int n) { return n != 0 ? (31 - __builtin_clz(n)) : -1; }inline int msb(ll n) { return n != 0 ? (63 - __builtin_clzll(n)) : -1; }#define gcd __gcd#define dump(...)#define dumpel(v)#define dump_list(v)#define dump_mat(v)#define input_from_file(f)#define output_to_file(f)#define Assert(b) { if (!(b)) while (1) cout << "OLE"; }#endif// いろいろ高速化#pragma GCC target("avx2")#pragma GCC optimize("O3")#pragma GCC optimize("unroll-loops")int main() {// input_from_file("input.txt");// output_to_file("output.txt");int h, w;cin >> h >> w;vvi a(h, vi(w));cin >> a;if (h <= 2 || w <= 2) {int res = 0;rep(i, h) rep(j, w) res += a[i][j];cout << res << endl;return 0;}int res = 0;vector<pii> out;rep(i, h) rep(j, w) if (!inQ(i, j, 1, 1, h - 1, w)) out.push_back({ i, j });int K = sz(out);dump(out);rep(k1, K) {auto [x1, y1] = out[k1];repi(k2, k1, K - 1) {auto [x2, y2] = out[k2];repi(dx1, -1, 1) repi(dy1, -1, 1) {if (dx1 == 0 && dy1 == 0) continue;if (!inQ(x1 + dx1, y1 + dy1, 0, 0, h, w)) continue;repi(dx2, -1, 1) repi(dy2, -1, 1) {if (dx2 == 0 && dy2 == 0) continue;if (!inQ(x2 + dx2, y2 + dy2, 0, 0, h, w)) continue;queue<int> q; int sum = 0;int x = x1, y = y1;while (inQ(x, y, 0, 0, h, w)) {sum += a[x][y];q.push(a[x][y]);a[x][y] = 0;x += dx1;y += dy1;}x = x2; y = y2;while (inQ(x, y, 0, 0, h, w)) {sum += a[x][y];q.push(a[x][y]);a[x][y] = 0;x += dx2;y += dy2;}chmax(res, sum);x = x1; y = y1;while (inQ(x, y, 0, 0, h, w)) {a[x][y] += q.front(); q.pop();x += dx1;y += dy1;}x = x2; y = y2;while (inQ(x, y, 0, 0, h, w)) {a[x][y] += q.front(); q.pop();x += dx2;y += dy2;}}}}}cout << res << endl;}