結果
問題 |
No.1733 Sum of Sorted Subarrays
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ユーザー |
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提出日時 | 2025-09-15 05:22:52 |
言語 | C++23 (gcc 13.3.0 + boost 1.87.0) |
結果 |
WA
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実行時間 | - |
コード長 | 4,282 bytes |
コンパイル時間 | 3,905 ms |
コンパイル使用メモリ | 308,792 KB |
実行使用メモリ | 14,100 KB |
最終ジャッジ日時 | 2025-09-15 05:23:06 |
合計ジャッジ時間 | 12,834 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge2 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 2 WA * 1 |
other | AC * 5 WA * 19 |
ソースコード
#include<bits/stdc++.h> #if __has_include(<atcoder/all>) #include<atcoder/modint> #include<atcoder/lazysegtree> #endif using namespace std; #define LL(...) ll __VA_ARGS__;lin(__VA_ARGS__) #define RDVL(T,n,...) vec<T>__VA_ARGS__;fe(refs(__VA_ARGS__),e)e.get().resizes(n);lin(__VA_ARGS__) #define VL(n,...) RDVL(ll,n,__VA_ARGS__) #define fo(i,...) for(auto[i,i##stop,i##step]=for_range<ll>(0,__VA_ARGS__);i<i##stop;i+=i##step) #define fe(a,e,...) for(auto&&__VA_OPT__([)e __VA_OPT__(,__VA_ARGS__]):a) #define defpp template<ostream&o=cout>void pp(const auto&...a){[[maybe_unused]]const char*c="";((o<<c<<a,c=" "),...);o<<'\n';}void epp(const auto&...a){pp<cerr>(a...);} #define entry defpp void main();void main2();}int main(){my::io();my::main();}namespace my{ #define use_ml998244353 using ml=atcoder::modint998244353; namespace my{ auto&operator<<(ostream&o,const atcoder::modint998244353&x){return o<<(int)x.val();} void io(){cin.tie(nullptr)->sync_with_stdio(0);cout<<fixed<<setprecision(15);} using ll=long long; constexpr auto refs(auto&...a){return array{ref(a)...};} template<class T>constexpr auto for_range(T s,T b){T a=0;if(s)swap(a,b);return array{a-s,b,1-s*2};} void lin(auto&...a){(cin>>...>>a);} template<class...A>using pack_back_t=tuple_element_t<sizeof...(A)-1,tuple<A...>>; } namespace my{ template<class T>class FenwickTree{ public: ll n_; vector<T>data_; FenwickTree(ll n):n_(n),data_(n){} void add(ll i,T x){ assert(0<=i&&i<n_); i++; while(i<=n_){ data_[i-1]+=x; i+=i&-i; } } T sum(ll l,ll r)const{ assert(0<=l&&l<=r&&r<=n_); T res=0; while(r>0)res+=data_[r-1],r-=r&-r; while(l>0)res-=data_[l-1],l-=l&-l; return res; } }; } namespace my{ template<class V>istream&operator>>(istream&i,vector<V>&v){fe(v,e)i>>e;return i;} template<class V>constexpr int depth=0; template<class T>struct core_t_helper{using type=T;}; template<class T>using core_t=core_t_helper<T>::type; template<class V>struct vec; template<int D,class T>struct hvec_helper{using type=vec<typename hvec_helper<D-1,T>::type>;}; template<class T>struct hvec_helper<0,T>{using type=T;}; template<int D,class T>using hvec=hvec_helper<D,T>::type; template<class V>struct vec:vector<V>{ static constexpr int D=depth<V>+1; using C=core_t<V>; using vector<V>::vector; void resizes(const auto&...a){if constexpr(sizeof...(a)==D)*this=make(a...,C{});else{ }} static auto make(ll n,const auto&...a){ if constexpr(sizeof...(a)==1)return vec<C>(n,array{a...}[0]); else { } } ll size()const{return vector<V>::size();} auto iota()const{vec<int>r(size());std::iota(r.begin(),r.end(),0);return r;} template<class F=less<>>auto stable_sort(F f={})const{vec v=*this;ranges::stable_sort(v,f);return v;} template<class F=less<>>auto arg_sort(F f={})const{return iota().stable_sort([&](ll i,ll j){return f((*this)[i],(*this)[j]);});} auto rev()const{vec v=*this;ranges::reverse(v);return v;} }; template<class...A>requires(sizeof...(A)>=2)vec(const A&...a)->vec<hvec<sizeof...(A)-2,pack_back_t<A...>>>; } namespace my{ namespace sgt{ template<class T,auto x>T identity(){return x;} template<class T>T identity(){return T{};} template<class T>T add(T a,T b){return a+b;} template<class S,class F>S mul_mapping(F f,S x){return x*f;} template<class F>F mul_composition(F f,F g){return g*f;} template<class T>struct lazyseg_mul_sum:atcoder::lazy_segtree<T,add<T>,identity<T>,T,mul_mapping<T,T>,mul_composition<T>,identity<T,1>>{ using base=atcoder::lazy_segtree<T,add<T>,identity<T>,T,mul_mapping<T,T>,mul_composition<T>,identity<T,1>>; lazyseg_mul_sum(const vec<T>&a):base(vec<T>(a.size(),1)){} }; } } namespace my{entry void main(){ LL(N); VL(N,a); use_ml998244353 ml inv2=ml(1)/2; // cnt(l,r,x)=#{i|l<=i<=r \land a[i]<x} // \sum_{i=0}^{N-1} a[i] * \sum_{l=0}^i 2^{cnt(l,i,a[i])} * \sum_{r=i}^{N-1} 2^{cnt(i,r,a[i])} auto calc=[&](const vec<ll>&a){ auto o=a.arg_sort(); sgt::lazyseg_mul_sum<ml>s(vec<ml>(N,1)); FenwickTree<ll>fw(N); vec<ml>res(N); fe(o,i){ res[i]=ml(2).pow(fw.sum(0,i))*s.prod(0,i+1); fw.add(i,1); s.apply(i+1,N,inv2); } return res; }; ml ans=0; vec<ml>l=calc(a); vec<ml>r=calc(a.rev()).rev(); fo(i,N)ans+=a[i]*l[i]*r[i]; pp(ans); }}