Submission #719933

#TimeUsernameProblemLanguageResultExecution timeMemory
719933Yell0Cave (IOI13_cave)C++17
0 / 100
1146 ms644 KiB
#include <bits/stdc++.h> #include <ext/pb_ds/assoc_container.hpp> #include <ext/pb_ds/tree_policy.hpp> #include "cave.h" using namespace std; using namespace __gnu_pbds; typedef tree<int,null_type,less<int>,rb_tree_tag,tree_order_statistics_node_update> ordered_set; void exploreCave(int N) { int config[N],perm[N]; ordered_set idx; for(int i=0;i<N;++i) idx.insert(i); for(int i=0;i<N;++i) { bool on=1; for(int x:idx) config[x]=1; if(tryCombination(config)<=i) on=0; for(int x:idx) config[x]=!on; int st=0,sz=(N-i)/2,psz=N-i,sw; while(sz>0) { sw=st; for(int j=st;j<=st+sz;++j) config[*idx.find_by_order(j)]=on; if(tryCombination(config)<=i) { st=st+sz; int tsz=sz; sz=(psz-sz)/2; psz=tsz; } else { sz/=2; sw=st; } for(int j=st;j<=st+sz;++j) config[*idx.find_by_order(j)]=!on; } perm[sw]=i; config[sw]=on; idx.erase(sw); } answer(perm,config); }
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