제출 #810195

#제출 시각아이디문제언어결과실행 시간메모리
810195ono_de206Cave (IOI13_cave)C++11
0 / 100
212 ms428 KiB
#include "cave.h" #include <stdio.h> #include <stdlib.h> void exploreCave(int N) { int S[N + 1], D[N + 1], LOL[N + 1]; int A[N + 1]; for(int i = 0; i < N; i++) { A[i] = LOL[i] = 0; } for(int i = 0; i < N; i++) { int l = 0, r = N - 1; int c = tryCombination(A); if(c == -1) c = N; while(l < r) { int m = (l + r) / 2; for(int j = l; j <= m; j++) { if(LOL[j]) continue; A[j] ^= 1; } int pp = tryCombination(A); if(pp == -1) pp = N; for(int j = l; j <= m; j++) { if(LOL[j]) continue; A[j] ^= 1; } if((pp == i && c > i) || (pp > i && c == i)) r = m; else l = m + 1; } D[l] = i; if(c == i) { A[l] ^= 1; } S[l] = A[l]; } answer(S, D); }
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