結果
問題 | No.919 You Are A Project Manager |
ユーザー | ningenMe |
提出日時 | 2019-09-12 22:47:04 |
言語 | C++14 (gcc 12.3.0 + boost 1.83.0) |
結果 |
TLE
|
実行時間 | - |
コード長 | 4,364 bytes |
コンパイル時間 | 2,557 ms |
コンパイル使用メモリ | 197,056 KB |
実行使用メモリ | 20,400 KB |
最終ジャッジ日時 | 2024-09-19 04:15:37 |
合計ジャッジ時間 | 10,531 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge4 |
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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 |
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testcase_00 | TLE | - |
testcase_01 | -- | - |
testcase_02 | -- | - |
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testcase_55 | -- | - |
testcase_56 | -- | - |
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)...);} inline 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()); } } inline void exchange(multiset<long long>& stl,multiset<long long>& str){ 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); } } int main() { cin.tie(0);ios::sync_with_stdio(false); int N; cin >> N; vector<long long> A(N); for(int i = 0; i < N; ++i) cin >> A[i]; vector<pair<int,int>> range; for(int i = 1; i <= N; ++i) { for(int j = 0; j+i <= N; j+=i) range.push_back({j,j+i-1}); for(int j = N; 0 <= j-i; j-=i) range.push_back({j-i,j-1}); } int bucket = sqrt(N); vector<int> idx(range.size()); 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()) exchange(stl,str); balance(stl,str); } while(r < xr){ r++; stl.insert(A[r]); if(str.size()) exchange(stl,str); 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; int cnt = 0; for(long long i = 1; i <= N; ++i) { int M = N/i; vector<long long> lSum(M,0),rSum(M,0); vector<pair<int,int>> lRange(M),rRange(M); for(int j = 0; j < M; ++j) lRange[j] = range[cnt+j]; for(int j = M-1; 0 <= j; --j) rRange[j] = range[cnt + 2*M-1 - j]; for(int j = 0; j < M; ++j) lSum[j] = i*mp[lRange[j]]; for(int j = M-1; 0 <= j; --j) rSum[j] = i*mp[rRange[j]]; for(int j = 1; j < M; ++j) lSum[j] += lSum[j-1]; for(int j = M-2; 0 <= j; --j) rSum[j] += rSum[j+1]; for(int j = 1; j < M; ++j) chmax(lSum[j],lSum[j-1]); for(int j = M-2; 0 <= j; --j) chmax(rSum[j],rSum[j+1]); chmax(ans,lSum[M-1]); chmax(ans,rSum[0]); int k = 0; for(int j = 0; j < M; ++j) { while(k < M && range[cnt + j].second >= range[cnt + 2*M-1-k].first) k++; if(k<M && lRange[j].second < rRange[k].first) { chmax(ans,lSum[j]+rSum[k]); } } cnt += 2*M; } cout << ans << endl; return 0; }