제출 #648078

#제출 시각아이디문제언어결과실행 시간메모리
648078PoonYaPat동굴 (IOI13_cave)C++14
100 / 100
964 ms552 KiB
#include "cave.h" #include <bits/stdc++.h> using namespace std; int con[5000],test[5000],ans[5000]; // switch i connect to door con[i] bool fix_switch[5000]; void exploreCave(int n) { for (int i=0; i<n; ++i) { //find door x (0 to x-1 are open) int k; if (tryCombination(ans)==i) k=1; else k=0; int l=0, r=n-1; while (r>l) { int mid=(l+r)/2; for (int j=0; j<n; ++j) { if (fix_switch[j]) test[j]=ans[j]; else test[j]=k; } for (int j=l; j<=mid; ++j) if (!fix_switch[j]) test[j]=1-k; if (tryCombination(test)==i) r=mid; //not change else l=mid+1; //change } ans[r]=k; fix_switch[r]=true; con[r]=i; } answer(ans,con); }
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