제출 #448281

#제출 시각아이디문제언어결과실행 시간메모리
448281M_W동굴 (IOI13_cave)C++14
0 / 100
415 ms404 KiB
#include <bits/stdc++.h> #include "cave.h" using namespace std; int a[5050], pos[5050]; bool mark[5050]; void exploreCave(int N){ for(int i = 0; i < N; i++){ for(int j = 0; j < N; j++) if(!mark[j]) a[j] = 0; int zero = tryCombination(a), state; if(zero > i) state = 0; else state = 1; int l = 0, r = N-1; while(l < r){ int mid = (l + r) / 2; for(int j = 0; j <= mid; j++) if(!mark[j]) a[j] = state; for(int j = mid + 1; j < N; j++) if(!mark[j]) a[j] = 1 - state; int ret = tryCombination(a); if(ret > i) r = mid; else l = mid + 1; } pos[i] = l; a[l] = state; mark[l] = true; } answer(a, pos); }
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