結果
問題 | No.424 立体迷路 |
ユーザー |
|
提出日時 | 2022-08-15 03:38:22 |
言語 | C++14 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 2 ms / 2,000 ms |
コード長 | 3,326 bytes |
コンパイル時間 | 3,983 ms |
コンパイル使用メモリ | 247,348 KB |
実行使用メモリ | 5,248 KB |
最終ジャッジ日時 | 2024-10-01 18:14:42 |
合計ジャッジ時間 | 4,747 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge4 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 5 |
other | AC * 21 |
ソースコード
#include<bits/stdc++.h>#include<atcoder/all>using namespace std;using namespace atcoder;typedef long long int ll;typedef long double ld;#define FOR(i,l,r) for(ll i=l;i<r;i++)#define REP(i,n) FOR(i,0,n)#define RFOR(i,l,r) for(ll i=r-1;i>=l;i--)#define RREP(i,n) RFOR(i,0,n)#define ALL(x) x.begin(),x.end()#define PA pair<ll,ll>#define F first#define S second#define BS(A,x) binary_search(ALL(A),x)#define LB(A,x) (ll)(lower_bound(ALL(A),x)-A.begin())#define UB(A,x) (ll)(upper_bound(ALL(A),x)-A.begin())#define COU(A,x) (UB(A,x)-LB(A,x))#define sz(c) ((ll)(c).size())/*#include<boost/multiprecision/cpp_int.hpp>namespace mp=boost::multiprecision;using Bint=mp::cpp_int;*/template<typename T>using min_priority_queue=priority_queue<T,vector<T>,greater<T>>;template<typename T1,typename T2>ostream&operator<<(ostream&os,pair<T1,T2>&p){os<<p.F<<" "<<p.S;return os;}template<typename T1,typename T2>istream&operator>>(istream&is,pair<T1,T2>&p){is>>p.F>>p.S;return is;}template<typename T>ostream&operator<<(ostream&os,vector<T>&v){REP(i,sz(v))os<<v[i]<<(i+1!=sz(v)?" ":"");return os;}template<typename T>istream&operator>>(istream&is,vector<T>&v){for(T&in:v)is>>in;return is;}template<class T>bool chmax(T&a,T b){if(a<b){a=b;return 1;}return 0;}template<class T>bool chmin(T&a,T b){if(b<a){a=b;return 1;}return 0;}ld dist(ld x1,ld y1,ld x2,ld y2){return sqrtl((x1-x2)*(x1-x2)+(y1-y2)*(y1-y2));}using mint=modint1000000007;//using mint=modint998244353;const ll mod=1000000007;//const ll mod=998244353;//using mint=modint;ostream&operator<<(ostream&os,mint&a){os<<a.val();return os;}vector<ll>fast_mod_convolution(vector<ll>&a,vector<ll>&b,ll mod){const ll m1=167772161,m2=469762049,m3=1224736769;const ll m1_inv_m2=inv_mod(m1,m2);const ll m12_inv_m3=inv_mod(m1*m2,m3);const ll m12_mod=m1*m2%mod;auto x=convolution<m1>(a,b);auto y=convolution<m2>(a,b);auto z=convolution<m3>(a,b);vector<ll>ret(sz(a)+1);REP(i,sz(a)+1){ll v1=(y[i]-x[i])*m1_inv_m2%m2;if(v1<0)v1+=m2;ll v2=(z[i]-(x[i]+m1*v1)%m3)*m12_inv_m3%m3;if(v2<0)v2+=m3;ret[i]=(x[i]+m1*v1+m12_mod*v2)%mod;}return ret;}int main(){ll H,W;cin>>H>>W;PA s,G;cin>>s>>G;s.F--;s.S--;G.F--;G.S--;vector<string>S(H);cin>>S;vector<vector<bool>>DP(H,vector<bool>(W));DP[s.F][s.S]=1;queue<ll>X,Y;X.emplace(s.F);Y.emplace(s.S);while(sz(X)){ll x=X.front(),y=Y.front();X.pop();Y.pop();if(x&&abs(S[x-1][y]-S[x][y])<2&&!DP[x-1][y]){DP[x-1][y]=1;X.emplace(x-1);Y.emplace(y);}if(x<H-1&&abs(S[x+1][y]-S[x][y])<2&&!DP[x+1][y]){DP[x+1][y]=1;X.emplace(x+1);Y.emplace(y);}if(y&&abs(S[x][y-1]-S[x][y])<2&&!DP[x][y-1]){DP[x][y-1]=1;X.emplace(x);Y.emplace(y-1);}if(y<W-1&&abs(S[x][y+1]-S[x][y])<2&&!DP[x][y+1]){DP[x][y+1]=1;X.emplace(x);Y.emplace(y+1);}if(x>1&&S[x-2][y]==S[x][y]&&S[x-1][y]<S[x][y]&&!DP[x-2][y]){DP[x-2][y]=1;X.emplace(x-2);Y.emplace(y);}if(x<H-2&&S[x+2][y]==S[x][y]&&S[x+1][y]<S[x][y]&&!DP[x+2][y]){DP[x+2][y]=1;X.emplace(x+2);Y.emplace(y);}if(y>1&&S[x][y-2]==S[x][y]&&S[x][y-1]<S[x][y]&&!DP[x][y-2]){DP[x][y-2]=1;X.emplace(x);Y.emplace(y-2);}if(y<W-2&&S[x][y+2]==S[x][y]&&S[x][y+1]<S[x][y]&&!DP[x][y+2]){DP[x][y+2]=1;X.emplace(x);Y.emplace(y+2);}}if(DP[G.F][G.S])cout<<"YES"<<endl;else cout<<"NO"<<endl;return 0;}