제출 #772418

#제출 시각아이디문제언어결과실행 시간메모리
772418SanguineChameleon버섯 세기 (IOI20_mushrooms)C++17
10 / 100
188 ms1124 KiB
#include "mushrooms.h" #include <bits/stdc++.h> using namespace std; const int maxn = 2e4 + 20; const int lim = 1e9 + 20; int order[maxn]; vector<int> group[maxn]; mt19937 gen(69420); int count_mushrooms(int n) { for (int i = 0; i < n; i++) { order[i] = i; } shuffle(order + 1, order + n, gen); int pt = 1; group[0].push_back(0); int cur = 0; while (pt < n && (int)group[0].size() < lim && (int)group[1].size() < lim) { cur ^= use_machine({order[pt - 1], order[pt]}); group[cur].push_back(order[pt]); pt++; } return group[0].size(); }
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