제출 #99362

#제출 시각아이디문제언어결과실행 시간메모리
99362nad312동굴 (IOI13_cave)C++17
0 / 100
172 ms844 KiB
#include <cave.h> #include<bits/stdc++.h> using namespace std; typedef int lli; const lli N=5009, inf=1e9; lli n, a[N], query[N], com[N], pos[N]; //tryCombination(intS[]) lli Ask() { lli k=tryCombination(query); if(k==-1) { return inf; } return k; } void Find(lli x) { vector<lli> p; for(int i=0;i<n;i++) { if(com[i]==-1) { query[i]=0; p.push_back(i); } else { query[i]=com[i]; } } lli a=(Ask()>x), l=0, h=p.size()-1; while(l<h) { lli mid=(l+h)/2; for(int i=l;i<=mid;i++) { query[p[i]]=0; } for(int i=mid+1;i<=h;i++) { query[p[i+1]]=1; } if(Ask()>x) { if(a==1) { h=mid; } else { l=mid+1; } } else { if(a==1) { l=mid+1; } else { h=mid; } } } com[l]=(a^1); pos[l]=x; } void exploreCave(int m) { n=m; fill_n(&com[0], sizeof(com)/sizeof(com[0]), -1); fill_n(&pos[0], sizeof(pos)/sizeof(pos[0]), -1); for(int i=0;i<n;i++) { Find(i); } answer(com, pos); }
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