Submission #294710

#	Time	Username	Problem	Language	Result	Execution time	Memory
294710		ASDF123	The Big Prize (IOI17_prize)	C++14	0 / 100	95 ms	504 KiB

prize

#include "prize.h"
#include <bits/stdc++.h>
using namespace std;
typedef vector<int> vi;

int find_best(int n) {
  if (n == 1) {
    return 0;
  }
  int pos = 0;
  int q = 0;
  int S = sqrt(n);
  while (1) {
    q++;
    assert(q <= 10000);
    vi pos_res = ask(pos);
    if (pos_res[0] + pos_res[1] == 0) {
      return pos;
    }
    if (pos_res[0] + pos_res[1] >= S) {
      int l = pos, r = n;
      vi check = ask(l + 1);
      while (r - l > 1) {
        int mid = (l + r) >> 1;
        q++;
        assert(q <= 10000);
        vi mid_res = ask(mid);
        if (pos_res[0] == mid_res[0] && pos_res[1] == mid_res[1]) {
          l = mid;
        } else {
          r = mid;
        }
      }      
      pos = l + 1;
    } else {
      pos++;
    }
  }           
  // can't be here
  for (int i = 0; i < n; i++) {
		vi res = ask(i);
		if(res[0] + res[1] == 0)
			return i;
	}
	return 0;
}

//#include <bits/stdc++.h>
//using namespace std;

//signed main() { 
  //cout << log2(200000) << endl;
  
  //int cnt = 190000;
  //while (cnt > 1) {
    //cout << cnt << endl;
    //cnt = sqrt(cnt);
  //}
  //double ans = 190000 * sqrt(190000) 
//}

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