Submission #1043233

#	Time	Username	Problem	Language	Result	Execution time	Memory
1043233		Mr_Husanboy	The Big Prize (IOI17_prize)	C++17	90 / 100	45 ms	596 KiB

prize

#include "prize.h"
#include <bits/stdc++.h>
 
using namespace std;
 
#define ll long long
#define ff first
#define ss second
#define all(a) (a).begin(), (a).end()
 
template<typename T>
int len(T &a){
	return a.size();
}
int _q = 0;
 
int find_best(int n) {
	if(n <= 5000){
		for(int i = 0; i < n; i ++){
			if(ask(i) == vector<int>{0, 0}){
				return i;
			}
		}
	}
	int j = 0;
	int rig = 0;
	_q = 0;
	int lol = 0;
	int lim = 480;
	int mx = 0;
	int f = 0;
	while(lim --){
		auto v = ask(j);
		_q ++;
		if(v[0] + v[1] == 0){
			return j;
		}
		if(v[0] + v[1] > mx){
			f = j;
			mx = v[0] + v[1];
			rig = v[1];
		}
		j ++;
	}

 	while(true){
 		int l = j, r = n;
 		while(r - l > 1){
 			int m = (l + r) / 2;
 			vector<int> v = ask(m);
 			if(v[0] + v[1] == 0){
 				return m;
 			}
 			if(v[1] != rig){
 				r = m;
 			}else l = m;
 		}
 		j = r;
 		rig --;
 	}
}

Compilation message (stderr)

prize.cpp: In function 'int find_best(int)':
prize.cpp:28:6: warning: unused variable 'lol' [-Wunused-variable]
   28 |  int lol = 0;
      |      ^~~
prize.cpp:31:6: warning: variable 'f' set but not used [-Wunused-but-set-variable]
   31 |  int f = 0;
      |      ^

• Subtask 1: 20 / 20
• Subtask 2: 70 / 80