結果

問題 No.3071 Double Speedrun
ユーザー hato336
提出日時 2025-03-21 22:50:29
言語 C++23
(gcc 13.3.0 + boost 1.87.0)
結果
AC  
実行時間 1,945 ms / 6,000 ms
コード長 9,160 bytes
コンパイル時間 7,133 ms
コンパイル使用メモリ 334,680 KB
実行使用メモリ 181,632 KB
最終ジャッジ日時 2025-03-21 22:50:53
合計ジャッジ時間 23,393 ms
ジャッジサーバーID
（参考情報） 		judge6 / judge1
このコードへのチャレンジ
（要ログイン）
ファイルパターン 結果
sample AC * 3
other AC * 14
権限があれば一括ダウンロードができます

ソースコード

diff # 

#include <bits/stdc++.h>
#include <atcoder/all>
using namespace std;
using namespace atcoder;
#define all(...) std::begin(__VA_ARGS__), std::end(__VA_ARGS__)
#define rall(...) std::rbegin(__VA_ARGS__), std::rend(__VA_ARGS__)
#define OVERLOAD_REP(_1, _2, _3, _4, name, ...) name
#define REP1(n) for(ll i=0;i<n;i++)
#define REP2(i, n) for (ll i=0;i<n;i++)
#define REP3(i, a, n) for (ll i=a;i<n;i++)
#define REP4(i, a, b, n) for(ll i=a;i<n;i+=b)
#define rep(...) OVERLOAD_REP(__VA_ARGS__, REP4, REP3, REP2, REP1)(__VA_ARGS__)
#define OVERLOAD_RREP(_1, _2, _3, _4, name, ...) name
#define RREP1(n) for(ll i=n-1;i>=0;i--)
#define RREP2(i, n) for(ll i=n-1;i>=0;i--)
#define RREP3(i, a, n) for(ll i=n-1;i>=a;i--)
#define RREP4(i, a, b, n) for(ll i=n-1;i>=a;i-=b)
#define rrep(...) OVERLOAD_RREP(__VA_ARGS__, RREP4, RREP3, RREP2, RREP1)(__VA_ARGS__)
#define foa(a,v)  (auto& a : (v))
#define uniq(a) sort(all(a));a.erase(unique(all(a)),end(a))
#define len(n) (long long)(n).size()
#define pb push_back
using ll = long long;
using ld = long double;
using ull = unsigned long long;
using vi = vector<int>;
using vvi = vector<vi>;
using vvvi = vector<vvi>;
using vll = vector<ll>;
using vvll = vector<vll>;
using vvvll = vector<vvll>;
using vs = vector<string>;
using vvs = vector<vs>;
using vvvs = vector<vvs>;
using vld = vector<ld>;
using vvld = vector<vld>;
using vvvld = vector<vvld>;
using vc = vector<char>;
using vvc = vector<vc>;
using vvvc = vector<vvc>;
using pll = pair<ll,ll>;
using vpll = vector<pll>;
template<class... T>
constexpr auto min(T... a){
    return min(initializer_list<common_type_t<T...>>{a...});
}
template<class... T>
constexpr auto max(T... a){
    return max(initializer_list<common_type_t<T...>>{a...});
}
template<class... T>
void input(T&... a){
    (cin >> ... >> a);
}
ll POW(ll a,ll b){
    ll ans = 1;
    while (b){
        if (b & 1){
            ans *= a;
        }
        a *= a;
        b /= 2;
    }
    return ans;
}
ll MODPOW(ll a,ll b,ll c){
    ll ans = 1;
    while (b){
        if (b & 1){
            ans *= a;
            ans %= c;
        }
        a *= a;
        a %= c;
        b /= 2;
    }
    return ans;
}
#define OVERLOAD_POW(_1, _2, _3, name, ...) name
#define pow(...) OVERLOAD_POW(__VA_ARGS__, MODPOW, POW)(__VA_ARGS__)
#define INT(...) int __VA_ARGS__; input(__VA_ARGS__)
#define LL(...) ll __VA_ARGS__; input(__VA_ARGS__)
#define ULL(...) ull __VA_ARGS__; input(__VA_ARGS__)
#define LD(...) ld __VA_ARGS__; input(__VA_ARGS__)
#define STR(...) string __VA_ARGS__; input(__VA_ARGS__)
#define CHA(...) char __VA_ARGS__; input(__VA_ARGS__)
#define VLL(name,length) vll name(length);rep(i,length){cin >> name[i];}
#define VVLL(name,h,w) vvll name(h,vll(w));rep(i,h)rep(j,w){cin >> name[i][j];}
#define VVVLL(name,a,b,c) vvvll name(a,vvll(b,vll(c)));rep(i,a)rep(j,b)rep(k,c){cin >> name[i][j][k];}
#define VI(name,length) vi name(length);rep(i,length){cin >> name[i];}
#define VVI(name,h,w) vvi name(h,vi(w));rep(i,h)rep(j,w){cin >> name[i][j];}
#define VVVI(name,a,b,c) vvvi name(a,vvll(b,vi(c)));rep(i,a)rep(j,b)rep(k,c){cin >> name[i][j][k];}
#define VLD(name,length) vld name(length);rep(i,length){cin >> name[i];}
#define VVLD(name,h,w) vvld name(h,vld(w));rep(i,h)rep(j,w){cin >> name[i][j];}
#define VVVLD(name,a,b,c) vvvld name(a,vvld(b,vld(c)));rep(i,a)rep(j,b)rep(k,c){cin >> name[i][j][k];}
#define VC(name,length) vc name(length);rep(i,length){cin >> name[i];}
#define VVC(name,h,w) vvc name(h,vc(w));rep(i,h)rep(j,w){cin >> name[i][j];}
#define VVVC(name,a,b,c) vvvc name(a,vvc(b,vc(c)));rep(i,a)rep(j,b)rep(k,c){cin >> name[i][j][k];}
#define VS(name,length) vs name(length);rep(i,length){cin >> name[i];}
#define VVS(name,h,w) vvs name(h,vs(w));rep(i,h)rep(j,w){cin >> name[i][j];}
#define VVVS(name,a,b,c) vvvs name(a,vvs(b,vs(c)));rep(i,a)rep(j,b)rep(k,c){cin >> name[i][j][k];}
#define PLL(name) pll name;cin>>name.first>>name.second;
#define VPLL(name,length) vpll name(length);rep(i,length){cin>>name[i].first>>name[i].second;}

void print(){cout << "\n";}
template<class T, class... Ts>
void print(const T& a, const Ts&... b){cout << a;(cout << ... << (cout << ' ', b));cout << '\n';}
void print(vll x){rep(i,len(x)){cout << x[i];if(i!=len(x)-1){cout << " ";}else{cout << '\n';}}}
void print(vvll x){rep(i,len(x))rep(j,len(x[i])){cout << x[i][j];if(j!=len(x[i])-1){cout << " ";}else{cout << '\n';}}}
void print(vi x){rep(i,len(x)){cout << x[i];if(i!=len(x)-1){cout << " ";}else{cout << '\n';}}}
void print(vvi x){rep(i,len(x))rep(j,len(x[i])){cout << x[i][j];if(j!=len(x[i])-1){cout << " ";}else{cout << '\n';}}}
void print(vvvi x){rep(i,len(x))rep(j,len(x[i]))rep(k,len(x[i][j])){cout << x[i][j][k];if(k!=len(x[i][j])-1){cout << " ";}else if(j!=len(x[i])-1){cout << " | ";}else{cout << '\n';}}}
void print(vld x){rep(i,len(x)){cout << x[i];if(i!=len(x)-1){cout << " ";}else{cout << '\n';}}}
void print(vvld x){rep(i,len(x))rep(j,len(x[i])){cout << x[i][j];if(j!=len(x[i])-1){cout << " ";}else{cout << '\n';}}}
void print(vvvld x){rep(i,len(x))rep(j,len(x[i]))rep(k,len(x[i][j])){cout << x[i][j][k];if(k!=len(x[i][j])-1){cout << " ";}else if(j!=len(x[i])-1){cout << " | ";}else{cout << '\n';}}}
void print(vc x){rep(i,len(x)){cout << x[i];if(i!=len(x)-1){cout << " ";}else{cout << '\n';}}}
void print(vvc x){rep(i,len(x))rep(j,len(x[i])){cout << x[i][j];if(j!=len(x[i])-1){cout << " ";}else{cout << '\n';}}}
void print(vvvc x){rep(i,len(x))rep(j,len(x[i]))rep(k,len(x[i][j])){cout << x[i][j][k];if(k!=len(x[i][j])-1){cout << " ";}else if(j!=len(x[i])-1){cout << " | ";}else{cout << '\n';}}}
void print(vs x){rep(i,len(x)){cout << x[i];if(i!=len(x)-1){cout << " ";}else{cout << '\n';}}}
void print(vvs x){rep(i,len(x))rep(j,len(x[i])){cout << x[i][j];if(j!=len(x[i])-1){cout << " ";}else{cout << '\n';}}}
void print(vvvs x){rep(i,len(x))rep(j,len(x[i]))rep(k,len(x[i][j])){cout << x[i][j][k];if(k!=len(x[i][j])-1){cout << " ";}else if(j!=len(x[i])-1){cout << " | ";}else{cout << '\n';}}}
void print(pll x){cout << x.first << x.second << '\n';}
void print(vpll x){rep(i,len(x)){cout << x[i].first << x[i].second << '\n';}}
using mint = modint998244353;
int main(){
    LL(h,w);
    VS(s,h);
    vll cnt(h+w-2+1,0);
    vector<vector<pll>> v(h+w-2+1);
    rep(i,h){
        rep(j,w){
            cnt[i+j]++;
            v[i+j].push_back({i,j});
        }
    }
    vector<vector<vector<mint>>> dp;
    rep(i,len(cnt)){
        vector<vector<mint>> v(cnt[i],vector<mint>(cnt[i],mint(0)));
        dp.push_back(v);
    }
    dp[1][0][1] += 1;
    vvll v_id(h,vll(w,-1));

    rep(i,len(v)){
        ll idx = 0;
        for(auto [x,y]:v[i]){
            v_id[x][y] = idx;
            idx++;
        }
    }
    ll xj,yj,xk,yk,tj,tk;
    rep(i,len(dp)-1){
        rep(j,cnt[i]){
            rep(k,cnt[i]){
                if(j == k){continue;}
                xj = v[i][j].first;
                yj = v[i][j].second;
                xk = v[i][k].first;
                yk = v[i][k].second;
                xj += 1;
                xk += 1;
                if(0 <= xj && xj < h && 0 <= yj && yj < w && 0 <= xk && xk < h && 0 <= yk && yk < w && s[xj][yj] == '.' && s[xk][yk] == '.'){
                    tj = v_id[xj][yj];
                    tk = v_id[xk][yk];
                    if(i == len(dp)-2 || tj != tk){
                        dp[i+1][tj][tk] += dp[i][j][k];
                    }
                }

                xj = v[i][j].first;
                yj = v[i][j].second;
                xk = v[i][k].first;
                yk = v[i][k].second;
                xj += 1;
                yk += 1;
                if(0 <= xj && xj < h && 0 <= yj && yj < w && 0 <= xk && xk < h && 0 <= yk && yk < w && s[xj][yj] == '.' && s[xk][yk] == '.'){
                    tj = v_id[xj][yj];
                    tk = v_id[xk][yk];
                    if(i == len(dp)-2 || tj != tk){
                        dp[i+1][tj][tk] += dp[i][j][k];
                    }
                }

                xj = v[i][j].first;
                yj = v[i][j].second;
                xk = v[i][k].first;
                yk = v[i][k].second;
                yj += 1;
                xk += 1;
                if(0 <= xj && xj < h && 0 <= yj && yj < w && 0 <= xk && xk < h && 0 <= yk && yk < w && s[xj][yj] == '.' && s[xk][yk] == '.'){
                    tj = v_id[xj][yj];
                    tk = v_id[xk][yk];
                    if(i == len(dp)-2 || tj != tk){
                        dp[i+1][tj][tk] += dp[i][j][k];
                    }
                }

                xj = v[i][j].first;
                yj = v[i][j].second;
                xk = v[i][k].first;
                yk = v[i][k].second;
                yj += 1;
                yk += 1;
                if(0 <= xj && xj < h && 0 <= yj && yj < w && 0 <= xk && xk < h && 0 <= yk && yk < w && s[xj][yj] == '.' && s[xk][yk] == '.'){
                    tj = v_id[xj][yj];
                    tk = v_id[xk][yk];
                    if(i == len(dp)-2 || tj != tk){
                        dp[i+1][tj][tk] += dp[i][j][k];
                    }
                }

                
            }
        }
    }
    print(dp.back().back().back().val());
}
0