Submission #347438

#	Time	Username	Problem	Language	Result	Execution time	Memory
347438		milleniumEeee	커다란 상품 (IOI17_prize)	C++17	20 / 100	1 ms	512 KiB

prize

#include "prize.h"
//#include "grader.cpp"
#include <bits/stdc++.h>
using namespace std;

// vector <int> res = ask(i);

int find_best(int n) {
  vector <int> res = ask(0);
  if (res[0] + res[1] == 0) {
    return 0;
  }
  res = ask(n - 1);
  if (res[0] + res[1] == 0) {
    return n - 1;
  }
  int l = 0, r = n - 1;
  while (r - l > 1) {
    int mid = (l + r) >> 1;
    res = ask(mid);
    if (res[1] == 1) {
      l = mid;
    } else {
      r = mid;
    }
  }
  return r;
}

• Subtask 1: 20 / 20
• Subtask 2: 0 / 80