結果
問題 | No.2509 Beam Shateki |
ユーザー |
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提出日時 | 2023-10-20 21:31:12 |
言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 1,482 ms / 2,000 ms |
コード長 | 3,867 bytes |
コンパイル時間 | 1,921 ms |
コンパイル使用メモリ | 207,068 KB |
最終ジャッジ日時 | 2025-02-17 08:38:28 |
ジャッジサーバーID (参考情報) |
judge2 / judge4 |
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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
#include <bits/stdc++.h>#ifdef LOCAL#include <debug.hpp>#else#define debug(...) void(0)#endifusing namespace std;typedef long long ll;#define all(x) begin(x), end(x)constexpr int INF = (1 << 30) - 1;constexpr long long IINF = (1LL << 60) - 1;constexpr int dx[4] = {1, 0, -1, 0}, dy[4] = {0, 1, 0, -1};template <class T> istream& operator>>(istream& is, vector<T>& v) {for (auto& x : v) is >> x;return is;}template <class T> ostream& operator<<(ostream& os, const vector<T>& v) {auto sep = "";for (const auto& x : v) os << exchange(sep, " ") << x;return os;}template <class T, class U = T> bool chmin(T& x, U&& y) { return y < x and (x = forward<U>(y), true); }template <class T, class U = T> bool chmax(T& x, U&& y) { return x < y and (x = forward<U>(y), true); }template <class T> void mkuni(vector<T>& v) {sort(begin(v), end(v));v.erase(unique(begin(v), end(v)), end(v));}template <class T> int lwb(const vector<T>& v, const T& x) { return lower_bound(begin(v), end(v), x) - begin(v); }int main() {ios::sync_with_stdio(false);cin.tie(nullptr);int H, W;cin >> H >> W;vector A(H, vector<int>(W));cin >> A;ll ans = 0;vector<pair<int, int>> ex;for (int i = -1; i <= H; i++) {for (int j = -1; j <= W; j++) {if (i == -1 or i == H or j == -1 or j == W) {ex.emplace_back(i, j);}}}vector check(H, vector<bool>(W, false));for (int i = 0; i < int(ex.size()); i++) {for (int j = i; j < int(ex.size()); j++) {for (int dx1 = -1; dx1 <= 1; dx1++) {for (int dy1 = -1; dy1 <= 1; dy1++) {if (dx1 == 0 and dy1 == 0) continue;for (int dx2 = -1; dx2 <= 1; dx2++) {for (int dy2 = -1; dy2 <= 1; dy2++) {if (dx2 == 0 and dy2 == 0) continue;ll sum = 0;{auto [x, y] = ex[i];while (true) {x += dx1, y += dy1;if (x < 0 or H <= x or y < 0 or W <= y) break;if (not check[x][y]) sum += A[x][y];check[x][y] = true;}}{auto [x, y] = ex[j];while (true) {x += dx2, y += dy2;if (x < 0 or H <= x or y < 0 or W <= y) break;if (not check[x][y]) sum += A[x][y];check[x][y] = true;}}chmax(ans, sum);{auto [x, y] = ex[i];while (true) {x += dx1, y += dy1;if (x < 0 or H <= x or y < 0 or W <= y) break;check[x][y] = false;}}{auto [x, y] = ex[j];while (true) {x += dx2, y += dy2;if (x < 0 or H <= x or y < 0 or W <= y) break;check[x][y] = false;}}}}}}}}cout << ans << '\n';return 0;}