結果
問題 | No.1239 Multiplication -2 |
ユーザー | kiyoshi0205 |
提出日時 | 2020-09-26 00:14:15 |
言語 | C++14 (gcc 12.3.0 + boost 1.83.0) |
結果 |
WA
|
実行時間 | - |
コード長 | 4,263 bytes |
コンパイル時間 | 2,751 ms |
コンパイル使用メモリ | 191,220 KB |
実行使用メモリ | 9,104 KB |
最終ジャッジ日時 | 2024-06-28 08:27:31 |
合計ジャッジ時間 | 4,664 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge2 |
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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
5,248 KB |
testcase_01 | AC | 2 ms
5,376 KB |
testcase_02 | AC | 2 ms
5,376 KB |
testcase_03 | AC | 2 ms
5,376 KB |
testcase_04 | AC | 2 ms
5,376 KB |
testcase_05 | AC | 3 ms
5,376 KB |
testcase_06 | AC | 2 ms
5,376 KB |
testcase_07 | AC | 2 ms
5,376 KB |
testcase_08 | AC | 2 ms
5,376 KB |
testcase_09 | AC | 2 ms
5,376 KB |
testcase_10 | AC | 2 ms
5,376 KB |
testcase_11 | AC | 2 ms
5,376 KB |
testcase_12 | AC | 2 ms
5,376 KB |
testcase_13 | AC | 2 ms
5,376 KB |
testcase_14 | AC | 2 ms
5,376 KB |
testcase_15 | AC | 16 ms
5,376 KB |
testcase_16 | AC | 25 ms
6,144 KB |
testcase_17 | WA | - |
testcase_18 | WA | - |
testcase_19 | WA | - |
testcase_20 | WA | - |
testcase_21 | AC | 55 ms
8,908 KB |
testcase_22 | AC | 42 ms
8,320 KB |
testcase_23 | WA | - |
testcase_24 | AC | 39 ms
6,948 KB |
testcase_25 | AC | 10 ms
6,016 KB |
testcase_26 | AC | 57 ms
7,232 KB |
testcase_27 | WA | - |
testcase_28 | WA | - |
testcase_29 | WA | - |
testcase_30 | WA | - |
testcase_31 | WA | - |
testcase_32 | WA | - |
testcase_33 | WA | - |
testcase_34 | WA | - |
testcase_35 | WA | - |
testcase_36 | WA | - |
ソースコード
#pragma GCC target("avx") #pragma GCC optimize("O3") #pragma GCC optimize("unroll-loops") #include<bits/stdc++.h> // #include<ext/pb_ds/assoc_container.hpp> // #include<ext/pb_ds/tree_policy.hpp> // #include<ext/pb_ds/tag_and_trait.hpp> // using namespace __gnu_pbds; // #include<boost/multiprecision/cpp_int.hpp> // namespace multiprecisioninteger = boost::multiprecision; // using cint=multiprecisioninteger::cpp_int; using namespace std; using ll=long long; #define double long double using datas=pair<ll,ll>; using ddatas=pair<double,double>; using tdata=pair<ll,datas>; using vec=vector<ll>; using mat=vector<vec>; using pvec=vector<datas>; using pmat=vector<pvec>; // using llset=tree<ll,null_type,less<ll>,rb_tree_tag,tree_order_statistics_node_update>; #define For(i,a,b) for(i=a;i<(ll)b;++i) #define bFor(i,b,a) for(i=b,--i;i>=(ll)a;--i) #define rep(i,N) For(i,0,N) #define rep1(i,N) For(i,1,N) #define brep(i,N) bFor(i,N,0) #define brep1(i,N) bFor(i,N,1) #define all(v) (v).begin(),(v).end() #define allr(v) (v).rbegin(),(v).rend() #define vsort(v) sort(all(v)) #define vrsort(v) sort(allr(v)) #define endl "\n" #define eb emplace_back #define print(x) cout<<x<<endl #define printyes print("Yes") #define printno print("No") #define printYES print("YES") #define printNO print("NO") #define output(v) do{bool f=0;for(auto outi:v){cout<<(f?" ":"")<<outi;f=1;}cout<<endl;}while(0) #define matoutput(v) do{for(auto outimat:v)output(outimat);}while(0) // const ll mod=1000000007; const ll mod=998244353; const ll inf=1LL<<60; const double PI=acos(-1); const double eps=1e-9; template<class T,class E> ostream& operator<<(ostream& os,pair<T,E>& p){return os<<"{"<<p.first<<","<<p.second<<"}";} template<class T> inline bool chmax(T& a,T b){bool x=a<b;if(x)a=b;return x;} template<class T> inline bool chmin(T& a,T b){bool x=a>b;if(x)a=b;return x;} void startupcpp(){ cin.tie(0); ios::sync_with_stdio(false); cout<<fixed<<setprecision(15); } double distance(ddatas x,ddatas y){ double a=x.first-y.first,b=x.second-y.second; return sqrt(a*a+b*b); } ll modinv(ll a,ll m=mod) { ll b=m,u=1,v=0,t; while(b){ t=a/b; a-=t*b; swap(a,b); u-=t*v; swap(u,v); } return (u+m)%m; } ll moddevide(ll a,ll b){return (a*modinv(b))%mod;} vec modncrlistp,modncrlistm; ll modncr(ll n,ll r){ if(n<r)return 0; ll i,size=modncrlistp.size(); if(size<=n){ modncrlistp.resize(n+1); modncrlistm.resize(n+1); if(!size){ modncrlistp[0]=modncrlistm[0]=1; size++; } For(i,size,n+1){ modncrlistp[i]=modncrlistp[i-1]*i%mod; modncrlistm[i]=modinv(modncrlistp[i]); } } return modncrlistp[n]*modncrlistm[r]%mod*modncrlistm[n-r]%mod; } ll modpow(ll a,ll n,ll m=mod){ ll res=1; while(n>0){ if(n&1)res=res*a%m; a=a*a%m; n>>=1; } return res; } ll gcd(ll a,ll b){if(!b)return abs(a);return (a%b==0)?abs(b):gcd(b,a%b);} ll lcm(ll a,ll b){return a/gcd(a,b)*b;} ll countdigits(ll n){ ll ans=0; while(n){n/=10;ans++;} return ans; } ll sumdigits(ll n){ ll ans=0; while(n){ans+=n%10;n/=10;} return ans; } ll ans=0; int main(){ startupcpp(); // int codeforces;cin>>codeforces;while(codeforces--){ ll i,j,N; cin>>N; vec v(N),l(N),r(N),sol; rep(i,N){ cin>>v[i]; if(abs(v[i])==2)sol.eb(i); if(i&&l[i-1]){ l[i]=l[i-1]*v[i]; }else{ l[i]=v[i]; } if(abs(l[i])!=1)l[i]=0; } r[N-1]=v[N-1]; if(abs(r[N-1])!=1)r[N-1]=0; brep(i,N-1){ if(r[i+1]){ r[i]=r[i+1]*v[i]; }else{ r[i]=v[i]; } if(abs(r[i])!=1)r[i]=0; } // output(l); // output(r); for(auto& now:sol){ ll lcnt[2]={},rcnt[2]={}; i=now-1; while(i>=0&&abs(v[i])==1){ lcnt[r[i]>0]+=modpow(2,i-1); --i; } i=now+1; while(i<N&&abs(v[i])==1){ rcnt[l[i]>0]+=modpow(2,N-i-2); ++i; } if(v[now]>0){ rep(i,2)ans+=lcnt[i]*rcnt[i^1]%mod; ans+=modpow(2,now-1)*rcnt[0]%mod; ans+=modpow(2,N-now-2)*lcnt[0]%mod; }else{ rep(i,2)ans+=lcnt[i]*rcnt[i]%mod; ans+=modpow(2,now-1)*rcnt[1]%mod; ans+=modpow(2,now-1)*modpow(2,N-now-2)%mod; ans+=modpow(2,N-now-2)*lcnt[1]%mod; } ans%=mod; } // print(ans); ans=moddevide(ans,modpow(2,N-1)); print(ans); }