제출 #1008450

#제출 시각아이디문제언어결과실행 시간메모리
1008450VMaksimoski008동굴 (IOI13_cave)C++17
100 / 100
177 ms536 KiB
#include "cave.h" #include <iostream> using namespace std; void exploreCave(int n) { int S[n], D[n], V[n]; for(int i=0; i<n; i++) S[i] = V[i] = 0; for(int i=0; i<n; i++) { int l=0, r=n-1, p=n-1; if(tryCombination(S) != i) for(int j=0; j<n; j++) if(!V[j]) S[j] ^= 1; while(l <= r) { int M = (l + r) / 2; for(int j=l; j<=M; j++) if(!V[j]) S[j] ^= 1; if(tryCombination(S) != i) p = M, r = M - 1; else l = M + 1; for(int j=l; j<=M; j++) if(!V[j]) S[j] ^= 1; } D[p] = i; V[p] = 1; S[p] ^= 1; } answer(S, D); }
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