結果
問題 | No.919 You Are A Project Manager |
ユーザー | ningenMe |
提出日時 | 2019-09-12 00:29:17 |
言語 | C++14 (gcc 12.3.0 + boost 1.83.0) |
結果 |
TLE
|
実行時間 | - |
コード長 | 4,448 bytes |
コンパイル時間 | 2,093 ms |
コンパイル使用メモリ | 197,048 KB |
実行使用メモリ | 27,032 KB |
最終ジャッジ日時 | 2024-07-06 22:37:39 |
合計ジャッジ時間 | 10,337 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge5 |
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テストケース
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testcase_00 | TLE | - |
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testcase_57 | -- | - |
ソースコード
#include <bits/stdc++.h> using namespace std; template <class T> void chmax(T& a, const T b){a=max(a,b);} template <class T, class U>ostream &operator<<(ostream &o, const map<T, U>&obj) {o << "{"; for (auto &x : obj) o << " {" << x.first << " : " << x.second << "}" << ","; o << " }"; return o;} template <class T>ostream &operator<<(ostream &o, const set<T>&obj) {o << "{"; for (auto itr = obj.begin(); itr != obj.end(); ++itr) o << (itr != obj.begin() ? ", " : "") << *itr; o << "}"; return o;} template <class T>ostream &operator<<(ostream &o, const multiset<T>&obj) {o << "{"; for (auto itr = obj.begin(); itr != obj.end(); ++itr) o << (itr != obj.begin() ? ", " : "") << *itr; o << "}"; return o;} template <class T>ostream &operator<<(ostream &o, const vector<T>&obj) {o << "{"; for (int i = 0; i < (int)obj.size(); ++i)o << (i > 0 ? ", " : "") << obj[i]; o << "}"; return o;} template <class T, class U>ostream &operator<<(ostream &o, const pair<T, U>&obj) {o << "{" << obj.first << ", " << obj.second << "}"; return o;} template <template <class tmp> class T, class U> ostream &operator<<(ostream &o, const T<U> &obj) {o << "{"; for (auto itr = obj.begin(); itr != obj.end(); ++itr)o << (itr != obj.begin() ? ", " : "") << *itr; o << "}"; return o;} void print(void) {cout << endl;} template <class Head> void print(Head&& head) {cout << head;print();} template <class Head, class... Tail> void print(Head&& head, Tail&&... tail) {cout << head << " ";print(forward<Tail>(tail)...);} void balance(multiset<long long>& stl,multiset<long long>& str) { while(stl.size()>str.size()+1) { long long tmp = *stl.rbegin(); str.insert(tmp); stl.erase(stl.find(tmp)); } while(stl.size()<str.size()) { stl.insert(*str.begin()); str.erase(str.begin()); } } int main() { int N; cin >> N; vector<long long> A(N); for(int i = 0; i < N; ++i) cin >> A[i]; vector<vector<pair<int,int>>> asc(N+1),desc(N+1); vector<pair<int,int>> range; for(int i = 1; i <= N; ++i) { for(int j = 0; j+i <= N; j+=i) { asc[i].push_back({j,j+i-1}); range.push_back({j,j+i-1}); } for(int j = N; 0 <= j-i; j-=i) { desc[i].push_back({j-i,j-1}); range.push_back({j-i,j-1}); } reverse(desc[i].begin(),desc[i].end()); } int Q = range.size(); int bucket = sqrt(N); vector<int> idx(Q); iota(idx.begin(),idx.end(),0); sort(idx.begin(),idx.end(),[&](int a, int b){ int& al = range[a].first; int& ar = range[a].second; int& bl = range[b].first; int& br = range[b].second; return (al/bucket != bl/bucket) ? (al/bucket < bl/bucket) : (ar < br); }); int l = 0, r = 0; multiset<long long> stl,str; stl.insert(A[0]); map<pair<int,int>,long long> mp; for(int& i:idx){ int& xl = range[i].first; int& xr = range[i].second; while(l < xl){ if(stl.count(A[l])) stl.erase(stl.find(A[l])); else str.erase(str.find(A[l])); l++; balance(stl,str); } while(xl < l){ l--; stl.insert(A[l]); if(str.size()){ long long tmpl = *stl.rbegin(); long long tmpr = *str.begin(); if(tmpl>tmpr) { stl.erase(stl.find(tmpl)); stl.insert(tmpr); str.erase(str.find(tmpr)); str.insert(tmpl); } } balance(stl,str); } while(r < xr){ r++; stl.insert(A[r]); if(str.size()){ long long tmpl = *stl.rbegin(); long long tmpr = *str.begin(); if(tmpl>tmpr) { stl.erase(stl.find(tmpl)); stl.insert(tmpr); str.erase(str.find(tmpr)); str.insert(tmpl); } } balance(stl,str); } while(xr < r){ if(stl.count(A[r])) stl.erase(stl.find(A[r])); else str.erase(str.find(A[r])); r--; balance(stl,str); } if(l==xl && r==xr) mp[{xl,xr}] = *stl.rbegin(); } long long ans = 0; for(int i = 1; i <= N; ++i) { int M = N/i; vector<long long> sumasc(M,0),sumdesc(M,0); for(int j = 0; j < M; ++j) sumasc[j] = mp[asc[i][j]]; for(int j = M-1; 0 <= j; --j) sumdesc[j] = mp[desc[i][j]]; for(int j = 1; j < M; ++j) sumasc[j] += sumasc[j-1]; for(int j = M-2; 0 <= j; --j) sumdesc[j] += sumdesc[j+1]; for(int j = 1; j < M; ++j) chmax(sumasc[j],sumasc[j-1]); for(int j = M-2; 0 <= j; --j) chmax(sumdesc[j],sumdesc[j+1]); chmax(ans,sumasc[M-1]); chmax(ans,sumdesc[0]); int k = 0; for(int j = 0; j < M; ++j) { while(k < M && asc[i][j].second >= desc[i][k].first) k++; if(k<M && asc[i][j].second < desc[i][k].first) { chmax(ans,sumasc[j]+sumdesc[k]); } } } cout << ans << endl; return 0; }