제출 #265081

#제출 시각아이디문제언어결과실행 시간메모리
265081arayi커다란 상품 (IOI17_prize)C++17
0 / 100
83 ms2936 KiB
#include "prize.h" #include <bits/stdc++.h> using namespace std; const int N = 2e5 + 55; int dz[N], aj[N]; bool col[N]; int mx, q; int as(int a) { q++; if(q == 10000) { assert(0); } vector <int> fp = ask(a); if(fp[0] + fp[1] == 0) return 0; if(!col[a] && fp[0] + fp[1] < mx) return 2; if(fp[0] - dz[a]) return -1; return 1; } int find_best(int n) { mx = (n + 1) / 2; while(true) { int l = 0, r = n - 1; while(l <= r) { int mid = (l + r)/2; int sm = as(mid); if(sm == 0) return mid; if(sm == 2) { for (int i = mid + 1; i < n; i++) dz[i]++; for (int i = mid - 1; i >= 0; i--) aj[i]++; col[mid] = true; break; } if(sm == 1) l = mid + 1; if(sm == -1) r = mid - 1; } } }
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