제출 #79981

#제출 시각아이디문제언어결과실행 시간메모리
79981giorgikob동굴 (IOI13_cave)C++14
0 / 100
174 ms512 KiB
#include "cave.h" #include<bits/stdc++.h> int ans[50005],ans1[50005],S[50005],fix[50005]; void exploreCave(int N) { for(int i=0;i<N;i++) { for(int j=0;j<N;j++) if(fix[j]==1) S[j]=ans[j]; else S[j]=0; int x=tryCombination(S); bool k=false; if(x==-1 || x>i)k=true; int L=i,R=N-1,ind=0; while(L<=R) { int mid=(L+R)/2; for(int j=L;j<=mid;j++) if(fix[j]==0) S[j]=1-S[j]; x=tryCombination(S); bool w=false; if(x==-1 || x>i) w=true; if(k!=w) R=mid-1; else L=mid+1,ind=mid; k=w; } ans1[ind]=i;fix[ind]=1; (k==true)?ans[ind]=S[i]:ans[ind]=1-S[i]; } answer(ans,ans1); }
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