Submission #314649

#TimeUsernameProblemLanguageResultExecution timeMemory
314649jaaguptammeCave (IOI13_cave)C++14
0 / 100
572 ms504 KiB
#include <bits/stdc++.h> #include "cave.h" const int N=5005; using namespace std; void SW(int in[],int dn[],int ps){ for(int i=0;i<ps;i++){ if(dn[i]==0){ in[i]=1-in[i]; } } } void exploreCave(int N){ int in[N],ns[N],dn[N]; for(int i=0;i<N;i++)in[i]=ns[i]=dn[i]=0; for(int i=0;i<N;i++){ int cur=tryCombination(in); if(cur>=i){ int l=0,r=N-1,ans=-1; while(l<=r){ int m=(l+r)/2; SW(in,dn,m); if(tryCombination(in)<i){ ans=m; l=m+1; }else{ r=m-1; } SW(in,dn,m); } dn[ans]=1; ns[i]=ans; }else{ int l=0,r=N-1,ans=-1; while(l<=r){ int m=(l+r)/2; SW(in,dn,m); if(tryCombination(in)>=i){ ans=m; l=m+1; }else{ r=m-1; } SW(in,dn,m); } dn[ans]=1; ns[i]=ans; in[ans]=1; } } answer(in,ns); }
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