#921032 (C++23) No.2509 Beam Shateki

• 問題: No.2509 Beam Shateki
• ユーザー: Taiki0715
• 提出日時: 2023-10-20 21:47:20
• 言語: C++23 (gcc 12.3.0 + boost 1.83.0)
• 結果: AC
• 実行時間: 1,500 ms / 2,000 ms
• コード長: 3,583 bytes
• コンパイル時間: 6,503 ms
• コンパイル使用メモリ: 323,588 KB
• 実行使用メモリ: 4,348 KB
• 最終ジャッジ日時: 2023-10-20 21:49:00
• 合計ジャッジ時間: 47,036 ms
• ジャッジサーバーID （参考情報）: judge14 / judge9

入力	結果	実行時間; 実行使用メモリ
testcase_00	AC	2 ms; 4,348 KB
testcase_01	AC	2 ms; 4,348 KB
testcase_02	AC	2 ms; 4,348 KB
testcase_03	AC	187 ms; 4,348 KB
testcase_04	AC	187 ms; 4,348 KB
testcase_05	AC	187 ms; 4,348 KB
testcase_06	AC	183 ms; 4,348 KB
testcase_07	AC	182 ms; 4,348 KB
testcase_08	AC	225 ms; 4,348 KB
testcase_09	AC	183 ms; 4,348 KB
testcase_10	AC	185 ms; 4,348 KB
testcase_11	AC	190 ms; 4,348 KB
testcase_12	AC	182 ms; 4,348 KB
testcase_13	AC	1,463 ms; 4,348 KB
testcase_14	AC	1,494 ms; 4,348 KB
testcase_15	AC	1,470 ms; 4,348 KB
testcase_16	AC	1,500 ms; 4,348 KB
testcase_17	AC	1,465 ms; 4,348 KB
testcase_18	AC	1,486 ms; 4,348 KB
testcase_19	AC	1,478 ms; 4,348 KB
testcase_20	AC	1,491 ms; 4,348 KB
testcase_21	AC	1,461 ms; 4,348 KB
testcase_22	AC	1,489 ms; 4,348 KB
testcase_23	AC	1,485 ms; 4,348 KB
testcase_24	AC	1,465 ms; 4,348 KB
testcase_25	AC	1,466 ms; 4,348 KB
testcase_26	AC	1,493 ms; 4,348 KB
testcase_27	AC	1,475 ms; 4,348 KB
testcase_28	AC	1,487 ms; 4,348 KB
testcase_29	AC	1,461 ms; 4,348 KB
testcase_30	AC	1,461 ms; 4,348 KB
testcase_31	AC	1,465 ms; 4,348 KB
testcase_32	AC	1,462 ms; 4,348 KB
testcase_33	AC	25 ms; 4,348 KB
testcase_34	AC	326 ms; 4,348 KB
testcase_35	AC	715 ms; 4,348 KB
testcase_36	AC	148 ms; 4,348 KB
testcase_37	AC	10 ms; 4,348 KB
testcase_38	AC	116 ms; 4,348 KB
testcase_39	AC	145 ms; 4,348 KB
testcase_40	AC	433 ms; 4,348 KB
testcase_41	AC	3 ms; 4,348 KB
testcase_42	AC	198 ms; 4,348 KB
testcase_43	AC	948 ms; 4,348 KB
testcase_44	AC	1,108 ms; 4,348 KB
testcase_45	AC	132 ms; 4,348 KB
testcase_46	AC	260 ms; 4,348 KB
testcase_47	AC	1,102 ms; 4,348 KB
testcase_48	AC	259 ms; 4,348 KB
testcase_49	AC	519 ms; 4,348 KB
testcase_50	AC	599 ms; 4,348 KB
testcase_51	AC	27 ms; 4,348 KB
testcase_52	AC	393 ms; 4,348 KB
testcase_53	AC	2 ms; 4,348 KB
testcase_54	AC	2 ms; 4,348 KB
testcase_55	AC	3 ms; 4,348 KB
testcase_56	AC	2 ms; 4,348 KB
testcase_57	AC	2 ms; 4,348 KB
testcase_58	AC	2 ms; 4,348 KB
testcase_59	AC	2 ms; 4,348 KB
testcase_60	AC	2 ms; 4,348 KB
testcase_61	AC	2 ms; 4,348 KB
testcase_62	AC	3 ms; 4,348 KB
testcase_63	AC	2 ms; 4,348 KB

ソースコード

#include <bits/stdc++.h>
using namespace std;
#if __has_include(<atcoder/all>)
#include <atcoder/all>
using namespace atcoder;
template<int mod>istream &operator>>(istream &is,static_modint<mod> &a){long long b;is>>b;a=b;return is;}
istream &operator>>(istream &is,modint &a){long long b;cin>>b;a=b;return is;}
#endif
using ll=long long;
using ull=unsigned long long;
using P=pair<ll,ll>;
template<typename T>using minque=priority_queue<T,vector<T>,greater<T>>;
template<typename T>bool chmax(T &a,const T &b){return (a<b?(a=b,true):false);}
template<typename T>bool chmin(T &a,const T &b){return (a>b?(a=b,true):false);}
template<typename T1,typename T2>istream &operator>>(istream &is,pair<T1,T2>&p){is>>p.first>>p.second;return is;}
template<typename T>istream &operator>>(istream &is,vector<T> &a){for(auto &i:a)is>>i;return is;}
template<typename T1,typename T2>void operator++(pair<T1,T2>&a,int n){a.first++,a.second++;}
template<typename T1,typename T2>void operator--(pair<T1,T2>&a,int n){a.first--,a.second--;}
template<typename T>void operator++(vector<T>&a,int n){for(auto &i:a)i++;}
template<typename T>void operator--(vector<T>&a,int n){for(auto &i:a)i--;}
#define reps(i,a,n) for(int i=(a);i<(n);i++)
#define rep(i,n) reps(i,0,n)
#define all(x) x.begin(),x.end()
#define pcnt(x) __builtin_popcount(x)
ll myceil(ll a,ll b){return (a+b-1)/b;}
template<typename T,size_t n,size_t id=0>
auto vec(const int (&d)[n],const T &init=T()){
  if constexpr (id<n)return vector(d[id],vec<T,n,id+1>(d,init));
  else return init;
}
#ifdef LOCAL
#include "debug.h"
#else
#define debug(...) static_cast<void>(0)
#define debugg(...) static_cast<void>(0)
template<typename T1,typename T2>ostream &operator<<(ostream &os,const pair<T1,T2>&p){os<<p.first<<' '<<p.second;return os;}
#endif
void SOLVE();
int main(){
  ios::sync_with_stdio(false);
  cin.tie(nullptr);
  #ifdef LOCAL
  clock_t start=clock();
  #endif
  int testcase=1;
  //cin>>testcase;
  for(int i=0;i<testcase;i++){
    SOLVE();
  }
  #ifdef LOCAL
  cerr<<"time:";
  cerr<<(clock()-start)/1000;
  cerr<<"ms\n";
  #endif
}
int h,w;
inline bool inarea(int x,int y){
  return 0<=x&&0<=y&&x<h&&y<w;
}
vector<pair<int,int>>around(int x,int y){
  vector<pair<int,int>>ret;
  vector<int>dx{1,0,-1,0},dy{0,1,0,-1};
  rep(i,4){
    int cx=x+dx[i],cy=y+dy[i];
    if(inarea(cx,cy))ret.emplace_back(cx,cy);
  }
  return ret;
}
vector<pair<int,int>>around8(int x,int y){
  vector<pair<int,int>>ret;
  vector<int>dx{1,1,0,-1,-1,-1,0,1},dy{0,1,1,1,0,-1,-1,-1};
  rep(i,8){
    int cx=x+dx[i],cy=y+dy[i];
    if(inarea(cx,cy))ret.emplace_back(cx,cy);
  }
  return ret;
}
void SOLVE(){
  cin>>h>>w;
  vector<vector<int>>a(h,vector<int>(w));
  cin>>a;
  int ans=-1e9;
  vector<pair<pair<int,int>,vector<pair<int,int>>>>xydxdy;
  rep(i,h)xydxdy.emplace_back(pair<int,int>{i,0},vector<pair<int,int>>{{1,1},{0,1},{-1,1}});
  rep(j,w)xydxdy.emplace_back(pair<int,int>{0,j},vector<pair<int,int>>{{1,-1},{1,0},{1,1}});
  rep(j,w)xydxdy.emplace_back(pair<int,int>{h-1,j},vector<pair<int,int>>{{-1,1}});
  rep(i,xydxdy.size()-1)reps(j,i+1,xydxdy.size()){
    for(auto [dx,dy]:xydxdy[i].second)for(auto [dx2,dy2]:xydxdy[j].second){
      unordered_set<int>st;
      int x,y;
      tie(x,y)=xydxdy[i].first;
      int sum=0;
      while(inarea(x,y)){
        sum+=a[x][y];
        st.insert(x*100+y);
        x+=dx,y+=dy;
      }
      tie(x,y)=xydxdy[j].first;
      if(i==0&&j==3)debug(sum);
      while(inarea(x,y)){
        if(!st.contains(x*100+y))sum+=a[x][y];
        x+=dx2,y+=dy2;
      }
      chmax(ans,sum);
    }
  }
  cout<<ans<<endl;
}