結果
| 問題 |
No.2509 Beam Shateki
|
| コンテスト | |
| ユーザー |
pmankirai
|
| 提出日時 | 2023-10-25 04:00:45 |
| 言語 | C++14 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 1,829 ms / 2,000 ms |
| コード長 | 3,048 bytes |
| コンパイル時間 | 1,908 ms |
| コンパイル使用メモリ | 175,784 KB |
| 実行使用メモリ | 6,948 KB |
| 最終ジャッジ日時 | 2024-09-24 23:27:44 |
| 合計ジャッジ時間 | 53,701 ms |
|
ジャッジサーバーID (参考情報) |
judge4 / judge2 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 61 |
コンパイルメッセージ
main.cpp: In function 'void solve()':
main.cpp:62:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17' [-Wc++17-extensions]
62 | auto [i1, j1] = getIJ(ij1);
| ^
main.cpp:63:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17' [-Wc++17-extensions]
63 | auto [i2, j2] = getIJ(ij2);
| ^
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, ij1) {
auto [i1, j1] = getIJ(ij1);
auto [i2, j2] = getIJ(ij2);
rep(d1, 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];
}
rep(d2, 8) {
int cnt2 = cnt;
V<int> b2;
int ni2 = i2, nj2 = j2;
while (0 <= ni2 && ni2 < h && 0 <= nj2 && nj2 < w) {
cnt2 += a[ni2][nj2];
b2.eb(a[ni2][nj2]);
a[ni2][nj2] = 0;
ni2 += dx[d2];
nj2 += dy[d2];
}
chmax(ans, cnt2);
ni2 = i2, nj2 = j2;
rep(k, sz(b2)) {
a[ni2][nj2] = b2[k];
ni2 += dx[d2];
nj2 += dy[d2];
}
}
ni1 = i1, nj1 = j1;
rep(k, sz(b1)) {
a[ni1][nj1] = b1[k];
ni1 += dx[d1];
nj1 += dy[d1];
}
}
}
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;
}
pmankirai