結果
問題 | No.1888 Odd Insertion |
ユーザー | 👑 potato167 |
提出日時 | 2022-03-25 22:56:29 |
言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 178 ms / 2,000 ms |
コード長 | 5,280 bytes |
コンパイル時間 | 2,153 ms |
コンパイル使用メモリ | 213,224 KB |
最終ジャッジ日時 | 2025-01-28 12:28:23 |
ジャッジサーバーID (参考情報) |
judge5 / judge3 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 2 |
other | AC * 37 |
ソースコード
#include <bits/stdc++.h> #pragma GCC optimize("Ofast") #define _GLIBCXX_DEBUG using 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),T(*e)()> struct segment_tree{ int _n,size; std::vector<T> seg; int ceil_pow2(int a){ int b=1; while(a>b){ b<<=1; } return b; } void update(int k){seg[k]=op(seg[k*2],seg[k*2+1]);}; segment_tree(int n) :_n(n){ size=ceil_pow2(n); seg=std::vector<T>(size*2,e()); } segment_tree(std::vector<T> &p) :_n((int) p.size()){ size=ceil_pow2(_n); seg=std::vector<T>(size*2,e()); for(int i=0;i<_n;i++) seg[i+size]=p[i]; for(int i=size-1;i>0;i--) update(i); } void set(int ind,T val){ assert(0<=ind&&ind<_n); ind+=size; seg[ind]=val; while(ind!=1){ ind>>=1; update(ind); } } void addl(int ind,T val){ set(ind,op(get(ind),val)); } void addr(int ind,T val){ set(ind,op(val,get(ind))); } T get(int ind){ assert(0<=ind&&ind<_n); return seg[ind+size]; } T query(int l,int r){ assert(0<=l&&l<=r&&r<=_n); T l_val=e(); T r_val=e(); l+=size,r+=size; while(l<r){ if(l&1) l_val=op(l_val,seg[l]),l+=1; if(r&1) r-=1,r_val=op(seg[r],r_val); r>>=1; l>>=1; } return op(l_val,r_val); } template <bool (*f)(T)> int max_right(int l) { return max_right(l, [](T x) { return f(x); }); } template <class F> int max_right(int l, F f) { assert(0<=l&&l<=_n); assert(f(e())); if(f(query(l,_n))) return _n; T val=e(); l+=size; while(true){ while(l%2==0) l>>=1; if(!f(op(val,seg[l]))){ while(l<size){ l*=2; if(f(op(val,seg[l]))){ val=op(val,seg[l]); l++; } } return l-size; } val=op(val,seg[l]); l++; } } template <bool (*f)(T)> int min_left(int r) { return min_left(r, [](T x) { return f(x); }); } template <class F> int min_left(int r, F f) { assert(0 <= r && r <= _n); assert(f(e())); if (r == 0) return 0; r += size; T sm = e(); do { r--; while (r > 1 && (r % 2)) r >>= 1; if (!f(op(seg[r], sm))) { while (r < size) { r = (2 * r + 1); if (f(op(seg[r], sm))) { sm = op(seg[r], sm); r--; } } return r + 1 - size; } sm = op(seg[r], sm); } while ((r & -r) != r); return 0; } }; } using po167::segment_tree; using F= int; F op_sum(F a,F b){return a+b;} F op_min(F a,F b){return min(a,b);} F e(){return 0;} F e_min(){return INF;} int target; bool f(F x){ return (x%target==0); } void solve(); // oddloop int main() { ios::sync_with_stdio(false); cin.tie(nullptr); int t=1; //cin>>t; rep(i,t) solve(); } void solve(){ int N; cin>>N; vector<int> p(N),rev(1+N); rep(i,N) cin>>p[i],p[i]--,rev[p[i]]=i; vector<int> B(N+1); segment_tree<F,op_sum,e> seg(N); rep(i,N){ B[i]=(1+seg.query(0,rev[i]))%2; seg.set(rev[i],1); //cout<<i<<" "<<B[i]<<endl; } segment_tree<F,op_min,e_min> odd(N),even(N); rep(i,N){ if(B[i]) odd.set(rev[i],i); else even.set(rev[i],i); } vector<queue<pair<int,int>>> q(2);//from,to vector<int> front(N+1,-1); int SUM=0; rep(i,N+1){ //cout<<i<<endl; if(B[i]){ //SUM^=1; odd.set(rev[i],e_min()); }else if(i!=N) even.set(rev[i],e_min()); //cout<<i<<endl; rep(j,2){ //cout<<i<<" "<<j<<" "<<q[j].size()<<endl; while(!q[j].empty()&&q[j].front().second<i){ q[j].pop(); } } //cout<<i<<endl; if(i!=0&&q[SUM].empty()){ SUM^=B[i]; continue; } if(i!=0) front[i]=q[SUM].front().first; SUM^=B[i]; int X=min(even.query(0,rev[i]),odd.query(rev[i],N)); //cout<<i<<" "<<X<<"\n"; q[SUM^B[i]^1].push({i,X}); } if(front[N]==-1){ yneos(0); return; } vector<int> order(N); rep(i,N) order[i]=i; int ind=N; while(front[ind]!=-1){ for(int j=front[ind];j<ind-1;j++){ swap(order[j],order[j+1]); } ind=front[ind]; /*cout<<"#"<<ind<<" "; vec_out(order);*/ } //cout<<"\n"; rep(i,N) seg.set(i,0); //rep(i,N+1) cout<<i<<" "<<front[i]<<"\n"; yneos(1); rep(i,N){ cout<<order[i]+1<<" "; cout<<seg.query(0,rev[order[i]])+1<<"\n"; seg.set(rev[order[i]],1); } }