제출 #38874

#제출 시각아이디문제언어결과실행 시간메모리
38874andy627마상시합 토너먼트 (IOI12_tournament)C++14
0 / 100
26 ms5792 KiB
#include <stdio.h> #include <set> #include <algorithm> #define ff first #define ss second #define pii pair<int,int> #define ele 131072 using namespace std; int n,c,r; int k[111111],s[111111],e[111111]; int nxt[111111],idx[333333]; set<pii> eff; void put_(int p,int num){ for(p+=ele,idx[p]=num,p>>=1;p;p>>=1) idx[p]=max(idx[2*p],idx[2*p+1]); } int max_(int s,int e){ int mx=0; s+=ele; e+=ele; while(s<e){ if(s%2==1) mx=max(mx,idx[s++]); if(e%2==0) mx=max(mx,idx[e--]); s/=2; e/=2; } if(s==e) mx=max(mx,idx[s]); return mx; } int GetBestPosition(int N,int C,int R,int *K,int *S,int *E){ n=N; c=C; r=R; for(int i=0;i<N-1;i++) k[i]=K[i]; for(int i=0;i<C;i++) s[i]=S[i]; for(int i=0;i<C;i++) e[i]=E[i]; for(int i=0;i<n;i++) nxt[i]=i+1; for(int i=0;i<n-1;i++) put_(i,k[i]); for(int i=0;i<c;i++){ int del=e[i]-s[i]; e[i]=s[i]; for(int j=0;j<=del;j++) e[i]=nxt[e[i]]; nxt[s[i]]=e[i]; e[i]--; } /* for(int i=0;i<c;i++) printf("%d %d\n",s[i],e[i]); printf("\n"); */ for(int i=0;i<c;i++){ if(r==max(r,max_(s[i],e[i]-1))){ eff.insert({s[i],1}); eff.insert({e[i],-1}); } } /* set<pii>::iterator itt=eff.begin(); while(itt!=eff.end()) printf("%d %d\n",itt->ff,itt->ss),itt++; printf("\n"); */ int mx=0,res=0; set<pii>::iterator it=eff.begin(); for(int i=0;i<n;i++){ while(it!=eff.end() && it->ff==i) res+=it->ss,it++; mx=max(mx,res); } return mx; }
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