제출 #289237

#제출 시각아이디문제언어결과실행 시간메모리
289237JoMee커다란 상품 (IOI17_prize)C++17
20 / 100
3018 ms368 KiB
#include "prize.h" #include <bits/stdc++.h> using namespace std; int res = -1; int c = 0; int find_best(int n) { int current = 0; int val = ask(current)[1]; int rk = val; while(true){ int l = 0; int r = n; while(r-l > 0){ int m = (r+l)/2; c++; if(c == 10000)while(true); vector<int> ans = ask(m); int v = ans[0]+ans[1]; if(v == 0){ res = m; break; } if(ans[1] == val && v ==rk){ l = m; }else if(v == rk){ r = m; } if(v != rk){ r = m; } } if(res !=-1)break; if(l == current){ current++; c++; if(c == 10000)while(true); vector<int> ans = ask(current); int v = ans[0]+ans[1]; if(v == 0){ res = current; break; } rk = v; val = ans[1]; }else{ current = l; c++; if(c == 10000)while(true); vector<int> ans = ask(current); int v = ans[0]+ans[1]; if(v == 0){ res = current; break; } rk = v; val = ans[1]; } } return res; }
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