제출 #39007

#제출 시각아이디문제언어결과실행 시간메모리
3900714kg동굴 (IOI13_cave)C++11
100 / 100
1250 ms600 KiB
// SB Solution #include "cave.h" #define N 5000 int n; int S[N], out1[N], out2[N]; bool check[N]; void exploreCave(int _n) { int try_num, ans, l, r, mid; n = _n; for (int i = 0; i < n; i++) { for (int j = 0; j < n; j++) if (!check[j]) S[j] = 0; try_num = tryCombination(S); ans = try_num == i ? 1 : 0; // ans일 때 열려 있음 l = 0, r = n - 1; while (l < r) { mid = (l + r) / 2; for (int j = 0; j < n; j++) if (check[j]) continue; else S[j] = l <= j && j <= mid ? 1 - ans : ans; try_num = tryCombination(S); if (try_num == i) r = mid; else l = mid + 1; } S[l] = ans, check[l] = true; out1[l] = ans, out2[l] = i; } answer(out1, out2); }
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