結果
問題 | No.1646 Avoid Palindrome |
ユーザー | TKTYI |
提出日時 | 2022-08-19 10:47:15 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 2,028 ms / 3,000 ms |
コード長 | 2,660 bytes |
コンパイル時間 | 4,558 ms |
コンパイル使用メモリ | 277,648 KB |
実行使用メモリ | 178,048 KB |
最終ジャッジ日時 | 2024-10-07 14:12:20 |
合計ジャッジ時間 | 43,352 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge1 |
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テストケース
テストケース表示入力 | 結果 | 実行時間 実行使用メモリ |
---|---|---|
testcase_00 | AC | 2 ms
6,820 KB |
testcase_01 | AC | 2 ms
6,820 KB |
testcase_02 | AC | 2 ms
6,820 KB |
testcase_03 | AC | 2 ms
6,816 KB |
testcase_04 | AC | 646 ms
167,936 KB |
testcase_05 | AC | 637 ms
167,936 KB |
testcase_06 | AC | 624 ms
162,304 KB |
testcase_07 | AC | 637 ms
167,936 KB |
testcase_08 | AC | 645 ms
169,472 KB |
testcase_09 | AC | 608 ms
161,280 KB |
testcase_10 | AC | 612 ms
165,248 KB |
testcase_11 | AC | 611 ms
160,640 KB |
testcase_12 | AC | 651 ms
167,552 KB |
testcase_13 | AC | 636 ms
169,600 KB |
testcase_14 | AC | 1,732 ms
164,736 KB |
testcase_15 | AC | 1,770 ms
167,936 KB |
testcase_16 | AC | 1,723 ms
163,712 KB |
testcase_17 | AC | 1,795 ms
170,752 KB |
testcase_18 | AC | 1,752 ms
166,272 KB |
testcase_19 | AC | 1,761 ms
165,376 KB |
testcase_20 | AC | 1,749 ms
166,784 KB |
testcase_21 | AC | 1,802 ms
170,624 KB |
testcase_22 | AC | 1,733 ms
164,736 KB |
testcase_23 | AC | 1,805 ms
171,520 KB |
testcase_24 | AC | 1,895 ms
177,920 KB |
testcase_25 | AC | 2,028 ms
178,048 KB |
testcase_26 | AC | 1,864 ms
177,920 KB |
testcase_27 | AC | 1,849 ms
178,048 KB |
testcase_28 | AC | 1,886 ms
178,048 KB |
testcase_29 | AC | 305 ms
177,920 KB |
testcase_30 | AC | 298 ms
178,048 KB |
testcase_31 | AC | 307 ms
177,920 KB |
testcase_32 | AC | 307 ms
178,048 KB |
testcase_33 | AC | 347 ms
177,920 KB |
testcase_34 | AC | 1,882 ms
177,920 KB |
testcase_35 | AC | 2 ms
6,816 KB |
testcase_36 | AC | 2 ms
6,820 KB |
testcase_37 | AC | 2 ms
6,820 KB |
testcase_38 | AC | 1 ms
6,816 KB |
testcase_39 | AC | 2 ms
6,816 KB |
testcase_40 | AC | 2 ms
6,816 KB |
testcase_41 | AC | 2 ms
6,816 KB |
testcase_42 | AC | 1 ms
6,820 KB |
testcase_43 | AC | 308 ms
178,048 KB |
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 N;string S;cin>>N>>S; if(N==1){if(S=="?")cout<<26<<endl;else cout<<1<<endl;return 0;} vector<vector<vector<mint>>>DP(N-1,vector<vector<mint>>(26,vector<mint>(26))); REP(i,26)REP(j,26)if(i!=j&&(S[0]=='?'||S[0]=='a'+i)&&(S[1]=='?'||S[1]=='a'+j))DP[0][i][j]++; REP(i,N-2)REP(j,26)REP(k,26)if(j!=k&&(S[i+1]=='?'||S[i+1]=='a'+j)&&(S[i+2]=='?'||S[i+2]=='a'+k))REP(l,26)if(l!=k)DP[i+1][j][k]+=DP[i][l][j]; mint ans=0; REP(i,26)REP(j,26)ans+=DP[N-2][i][j]; cout<<ans<<endl; return 0; }