Submission #1049591

#TimeUsernameProblemLanguageResultExecution timeMemory
1049591oscar1fJousting tournament (IOI12_tournament)C++17
100 / 100
35 ms3944 KiB
#include<bits/stdc++.h> using namespace std; const int DECA=(1<<17),MAX_CHEV=100*1000+5; int nbChev,nbRound,nivNouv; int nbGau[DECA],nbDro[DECA]; int tropFort[MAX_CHEV],debut[MAX_CHEV],nbGagn[MAX_CHEV],enCours[MAX_CHEV]; vector<int> bataille; void modif(int pos,int coeff) { enCours[pos]=coeff; pos+=DECA; while (pos>1) { if (pos%2==0) { nbGau[pos/2]+=coeff; } else { nbDro[pos/2]+=coeff; } pos/=2; } } void trouveInter(int pos,int nbAvant,int debInter,int finInter) { if (pos<DECA) { if (nbAvant>finInter or nbAvant+nbGau[pos]+nbDro[pos]<debInter or nbGau[pos]+nbDro[pos]==0) { return; } trouveInter(2*pos,nbAvant,debInter,finInter); trouveInter(2*pos+1,nbAvant+nbGau[pos],debInter,finInter); } else { if (nbAvant+1>=debInter and nbAvant+1<=finInter and enCours[pos-DECA]==1) { bataille.push_back(pos-DECA); } } } bool verif(int deb,int fin) { return ((tropFort[fin]-tropFort[deb])==0); } int GetBestPosition(int N, int C, int R, int *K, int *S, int *E) { nbChev=N; nbRound=C; nivNouv=R; for (int i=0;i<nbChev-1;i++) { tropFort[i+1]=tropFort[i]; if (K[i]>nivNouv) { tropFort[i+1]++; } } for (int i=0;i<nbChev;i++) { modif(i,1); debut[i]=i; } int debInter,finInter; for (int i=0;i<nbRound;i++) { bataille.clear(); trouveInter(1,0,S[i]+1,E[i]+1); /*for (int j:bataille) { cout<<j<<" "; }*/ debInter=debut[bataille[0]]; finInter=bataille.back(); for (int j=0;j<(int)bataille.size()-1;j++) { modif(bataille[j],-1); } debut[bataille.back()]=debInter; if (verif(debInter,finInter)) { nbGagn[debInter]++; nbGagn[finInter]--; } //cout<<debInter<<" "<<finInter<<" "<<verif(debInter,finInter)<<endl; } for (int i=1;i<nbChev;i++) { nbGagn[i]+=nbGagn[i-1]; } int rep=0,posRep=0; for (int i=0;i<nbChev;i++) { if (nbGagn[i]>rep) { rep=nbGagn[i]; posRep=i; } } return posRep; }
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