結果
問題 | No.1977 Extracting at Constant Intervals |
ユーザー |
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提出日時 | 2022-06-10 22:11:18 |
言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 76 ms / 2,000 ms |
コード長 | 3,397 bytes |
コンパイル時間 | 2,245 ms |
コンパイル使用メモリ | 211,652 KB |
最終ジャッジ日時 | 2025-01-29 19:57:20 |
ジャッジサーバーID (参考情報) |
judge4 / judge1 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 2 |
other | AC * 31 |
ソースコード
#include <bits/stdc++.h>#pragma GCC optimize("Ofast")#define _GLIBCXX_DEBUGusing namespace std;using std::cout;using std::cin;using std::endl;using ll=long long;using ld=long double;ll ILL=1167167167167167167;const int INF=2100000000;const ll mod=998244353;#define rep(i,a) for (ll i=0;i<a;i++)#define all(p) p.begin(),p.end()template<class T> using _pq = priority_queue<T, vector<T>, greater<T>>;template<class T> ll LB(vector<T> &v,T a){return lower_bound(v.begin(),v.end(),a)-v.begin();}template<class T> ll UB(vector<T> &v,T a){return upper_bound(v.begin(),v.end(),a)-v.begin();}template<class T> bool chmin(T &a,const T &b){if(a>b){a=b;return 1;}else return 0;}template<class T> bool chmax(T &a,const T &b){if(a<b){a=b;return 1;}else return 0;}template<class T> void So(vector<T> &v) {sort(v.begin(),v.end());}template<class T> void Sore(vector<T> &v) {sort(v.begin(),v.end(),[](T x,T y){return x>y;});}void yneos(bool a){if(a) cout<<"Yes\n"; else cout<<"No\n";}template<class T> void vec_out(vector<T> &p){for(int i=0;i<(int)(p.size());i++){if(i) cout<<" ";cout<<p[i];}cout<<"\n";}namespace po167{template<class T,T(*op)(T,T)>struct Doubling_op{int _n;long long Log;std::vector<std::vector<int>> index_data;std::vector<std::vector<T>> value_data;Doubling_op(int n,long long limit,std::vector<int> index,std::vector<T> value):_n(n){Log=2;while(limit){limit/=2;Log++;}index_data.resize(Log);value_data.resize(Log);index_data[0]=index;value_data[0]=value;for(int i=1;i<Log;i++){index_data[i].resize(_n);value_data[i].resize(_n);for(int j=0;j<_n;j++){int tmp=index_data[i-1][j];index_data[i][j]=index_data[i-1][tmp];value_data[i][j]=op(value_data[i-1][j],value_data[i-1][tmp]);}}}std::pair<int,T> query(long long times,int start_index,T start_value){for(int i=0;i<Log;i++){if(times&1){start_value=op(start_value,value_data[i][start_index]);start_index=index_data[i][start_index];}times>>=1;}return std::make_pair(start_index,start_value);}};struct Doubling{int _n;long long Log;std::vector<std::vector<int>> index_data;Doubling(int n,long long limit,std::vector<int> index):_n(n){Log=2;while(limit){limit/=2;Log++;}index_data.resize(Log);index_data[0]=index;for(int i=1;i<Log;i++){index_data[i].resize(_n);for(int j=0;j<_n;j++){int tmp=index_data[i-1][j];index_data[i][j]=index_data[i-1][tmp];}}}int query(long long times,int start_index){for(int i=0;i<Log;i++){if(times&1){start_index=index_data[i][start_index];}times>>=1;}return start_index;}};}using po167::Doubling_op;using po167::Doubling;using doubleing_F=long long;doubleing_F d_op(doubleing_F l,doubleing_F r){return l+r;}void solve();// oddloopint main() {ios::sync_with_stdio(false);cin.tie(nullptr);int t=1;//cin>>t;rep(i,t) solve();}void solve(){ll N,M,L;cin>>N>>M>>L;vector<ll> A(N);rep(i,N) cin>>A[i];vector<int> p(N);rep(i,N) p[i]=(i+L)%N;ll ans=-ILL;Doubling_op<doubleing_F,d_op> table(N,N*M,p,A);rep(i,N){if(i==L) break;ll V=1+(N*M-1-i)/L;chmax(ans,table.query(V,i,0).second);}if(N<=L){rep(i,N){ll x=(L/N)*N+i+N;while(x+i>=L) x-=N;ll V=1+(N*M-1-x)/L;chmax(ans,table.query(V,i,0).second);}}cout<<ans<<"\n";}