제출 #787669

#제출 시각아이디문제언어결과실행 시간메모리
787669khshg드문 곤충 (IOI22_insects)C++17
53.13 / 100
159 ms472 KiB
#include"insects.h" #include<bits/stdc++.h> using namespace std; int min_cardinality(int N) { int k; int D = 0; set<int> INs; for(int i = 0; i < N; ++i) { INs.insert(i); move_inside(i); k = press_button(); if(k == 2) { INs.erase(i); move_outside(i); continue; } ++D; } int tl = 1, tr = N / D; while(tl < tr) { int tm = (tl + tr + 1) / 2; for(int i = 0; i < N; ++i) { if(!INs.insert(i).second) continue; move_inside(i); k = press_button(); if(k > tm) { INs.erase(i); move_outside(i); continue; } if(D * tm == (int)INs.size()) break; } if((int)INs.size() < D * tm) { tr = tm - 1; if(tl == tr) continue; for(auto& u : INs) move_outside(u); INs.clear(); } else { tl = tm; } } return (tl + tr) / 2; }
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