제출 #416391

#제출 시각아이디문제언어결과실행 시간메모리
416391mjhmjh1104동굴 (IOI13_cave)C++17
100 / 100
672 ms572 KiB
#include "cave.h" #include <vector> using namespace std; int tmp, s[5006], t[5006]; void exploreCave(int n) { vector<int> empty_list; for (int i = 0; i < n; i++) empty_list.push_back(i); for (int i = 0; i < n; i++) { for (int i = 0; i < (int)empty_list.size(); i++) s[empty_list[i]] = 0; tmp = tryCombination(s); bool zero = (tmp == -1) || (tmp >= i + 1); if (zero) { int l = 0, r = (int)empty_list.size() - 1; while (l < r) { int m = (l + r) / 2; for (int i = 0; i <= m; i++) s[empty_list[i]] = 0; for (int i = m + 1; i <= r; i++) s[empty_list[i]] = 1; tmp = tryCombination(s); if (tmp == -1 || tmp >= i + 1) r = m; else l = m + 1; } s[empty_list[l]] = 0; t[empty_list[l]] = i; empty_list.erase(empty_list.begin() + l); } else { int l = 0, r = (int)empty_list.size() - 1; while (l < r) { int m = (l + r) / 2; for (int i = 0; i <= m; i++) s[empty_list[i]] = 1; for (int i = m + 1; i <= r; i++) s[empty_list[i]] = 0; tmp = tryCombination(s); if (tmp == -1 || tmp >= i + 1) r = m; else l = m + 1; } s[empty_list[l]] = 1; t[empty_list[l]] = i; empty_list.erase(empty_list.begin() + l); } } answer(s, t); }
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