結果
問題 |
No.2509 Beam Shateki
|
ユーザー |
![]() |
提出日時 | 2023-10-25 03:38:26 |
言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
結果 |
TLE
|
実行時間 | - |
コード長 | 2,946 bytes |
コンパイル時間 | 1,984 ms |
コンパイル使用メモリ | 200,404 KB |
最終ジャッジ日時 | 2025-02-17 13:32:54 |
ジャッジサーバーID (参考情報) |
judge4 / judge1 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 3 |
other | AC * 10 TLE * 1 -- * 50 |
ソースコード
#include <bits/stdc++.h> using namespace std; #define rep(i, n) for (int i = 0; i < (n); i++) #define rep1(i, n) for (int i = 1; i <= (n); i++) #define rrep(i, n) for (int i = n - 1; i >= 0; i--) #define rrep1(i, n) for (int i = n; i >= 1; i--) #define all(x) x.begin(), x.end() #define rall(x) x.rbegin(), x.rend() #define eb emplace_back #define fi first #define se second #define sz(x) (int)(x).size() template <class T> using V = vector<T>; template <class T> using VV = V<V<T>>; typedef long long int ll; void speedUpIO() { cin.tie(nullptr); ios::sync_with_stdio(false); } template <class T> bool chmax(T &a, const T &b) { if (a < b) { a = b; return true; } return false; } template <class T> bool chmin(T &a, const T &b) { if (b < a) { a = b; return true; } return false; } /*--------------------------------------------------*/ typedef pair<int, int> P; const int INF = 1e9; const ll LINF = 1e18; const int MAX = 100010; V<int> dx = {1, 0, -1, 0, 1, 1, -1, -1}; V<int> dy = {0, -1, 0, 1, 1, -1, 1, -1}; void solve() { int h, w; cin >> h >> w; VV<int> a(h, V<int>(w)); rep(i, h) rep(j, w) cin >> a[i][j]; int ans = 0; auto getIJ = [&](int ij) -> P { if (ij < h) return {ij, 0}; ij -= h; if (ij < h) return {ij, w - 1}; ij -= h; if (ij < w) return {0, ij}; ij -= w; return {h - 1, ij}; }; rep(ij1, 2 * (h + w)) rep(ij2, 2 * (h + w)) { auto [i1, j1] = getIJ(ij1); auto [i2, j2] = getIJ(ij2); rep(d1, 8) rep(d2, 8) { int cnt = 0; V<int> b1; int ni1 = i1, nj1 = j1; while (0 <= ni1 && ni1 < h && 0 <= nj1 && nj1 < w) { cnt += a[ni1][nj1]; b1.eb(a[ni1][nj1]); a[ni1][nj1] = 0; ni1 += dx[d1]; nj1 += dy[d1]; } V<int> b2; int ni2 = i2, nj2 = j2; while (0 <= ni2 && ni2 < h && 0 <= nj2 && nj2 < w) { cnt += a[ni2][nj2]; b2.eb(a[ni2][nj2]); a[ni2][nj2] = 0; ni2 += dx[d2]; nj2 += dy[d2]; } chmax(ans, cnt); ni1 = i1, nj1 = j1; rep(k, sz(b1)) { a[ni1][nj1] = b1[k]; ni1 += dx[d1]; nj1 += dy[d1]; } ni2 = i2, nj2 = j2; rep(k, sz(b2)) { if (b2[k] != 0) a[ni2][nj2] = b2[k]; ni2 += dx[d2]; nj2 += dy[d2]; } } } cout << ans << "\n"; } int main() { speedUpIO(); int t = 1; // cin >> t; while (t--) { solve(); // cout << solve() << "\n"; // cout << (solve() ? "Yes" : "No") << "\n"; // cout << fixed << setprecision(15) << solve() << "\n"; } return 0; }