Submission #109500

#TimeUsernameProblemLanguageResultExecution timeMemory
109500nikolapesic2802Mechanical Doll (IOI18_doll)C++14
100 / 100
207 ms19680 KiB
#include <bits/stdc++.h> #define ll long long #define pb push_back #define f first #define s second #define sz(x) (int)x.size() #define all(x) x.begin(), x.end() using namespace std; template<class T1, class T2> ostream& operator<<(ostream& os, const pair<T1,T2>& a) { os << '{' << a.f << ", " << a.s << '}'; return os; } template<class T> ostream& operator<<(ostream& os, const vector<T>& a){os << '{';for(int i=0;i<sz(a);i++){if(i>0&&i<sz(a))os << ", ";os << a[i];}os<<'}';return os;} void answer(std::vector<int> C, std::vector<int> X, std::vector<int> Y); struct node{ int x,y; node(){x=-1;y=-1;} }; const int NMAX=6e5+5; vector<node> graf(NMAX); vector<int> flipped(NMAX); vector<int> skips; int stigao; void markskips(vector<int> poz,int koliko) { if(koliko==0) return; vector<int> levo,desno; for(int i=0;i<(int)poz.size();i++) if(i%2) desno.pb(poz[i]); else levo.pb(poz[i]); if((int)levo.size()<=koliko) for(auto p:levo) skips[p]=1; else markskips(levo,koliko); if((int)levo.size()<koliko) markskips(desno,koliko-(int)levo.size()); } void build(int tr,vector<int> izlazi,int skip,int sta) { int ukupno=izlazi.size()+skip; assert(ukupno%2==0); if(ukupno==2) { if(skip) { assert(skip==1); graf[tr].x=sta; graf[tr].y=izlazi[0]; } else { graf[tr].x=izlazi[0]; graf[tr].y=izlazi[1]; } return; } if(skip>=ukupno/2) { graf[tr].x=sta; graf[tr].y=stigao; stigao++; build(graf[tr].y,izlazi,skip-ukupno/2,sta); return; } skips.resize(ukupno); fill(all(skips),0); vector<int> pozicije; for(int i=0;i<ukupno;i++) pozicije.pb(i); markskips(pozicije,skip); vector<int> levo,desno; int trr=0; for(int i=0;i<ukupno;i++) { if(i%2) desno.pb(izlazi[trr++]),assert(!skips[i]); else if(!skips[i]) levo.pb(izlazi[trr++]); } graf[tr].x=stigao; stigao++; build(graf[tr].x,levo,skip,sta); graf[tr].y=stigao; stigao++; build(graf[tr].y,desno,0,sta); } void create_circuit(int m, vector<int> a) { a.pb(0); stigao=m+1; for(int i=0;i<=m;i++) graf[i].x=stigao; stigao++; int sz=2; while(sz<(int)a.size()) sz*=2; build(stigao-1,a,sz-a.size(),stigao-1); vector<int> A,X,Y; for(int i=0;i<=m;i++) if(graf[i].x>m) A.pb(m-graf[i].x); else A.pb(graf[i].x); for(int i=m+1;i<stigao;i++) { if(graf[i].x>m) X.pb(m-graf[i].x); else X.pb(graf[i].x); if(graf[i].y>m) Y.pb(m-graf[i].y); else Y.pb(graf[i].y); } answer(A,X,Y); }
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