제출 #979656

#제출 시각아이디문제언어결과실행 시간메모리
97965612345678드문 곤충 (IOI22_insects)C++17
99.95 / 100
32 ms1100 KiB
#include "insects.h" #include <bits/stdc++.h> using namespace std; const int nx=2e3+5; int p, cnt, sz, in[nx], t[nx], s[nx]; int min_cardinality(int N) { cin.tie(NULL)->sync_with_stdio(false); for (int i=0; i<N; i++) { move_inside(i); if (press_button()==1) cnt++, in[i]=1, s[i]=1; else move_outside(i); } if (cnt==1) return N; if (cnt==N) return 1; int l=1, r=N/cnt; sz=cnt; while (l<r) { int md=(l+r+1)/2; for (int i=0; i<N; i++) { if (s[i]||t[i]) continue; move_inside(i); if (press_button()>md) move_outside(i); else sz++, in[i]=1; if (sz==cnt*md) break; } if (sz==cnt*md) { l=md; for (int i=0; i<N; i++) if (in[i]) s[i]=1; } else { r=md-1; for (int i=0; i<N; i++) if (!in[i]) t[i]=1; for (int i=0; i<N; i++) if (in[i]&&!s[i]) in[i]=0, move_outside(i), sz--; } } return l; }
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