Submission #1043019

#	Time	Username	Problem	Language	Result	Execution time	Memory
1043019		Mr_Husanboy	The Big Prize (IOI17_prize)	C++17	20 / 100	3062 ms	428 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;
	while(true){
		auto v = ask(j);
		_q ++;
		if(v[0] + v[1] == 0){
			return j;
		}
		if(n - v[0] - v[1] >= n / 2){
			rig = v[1];
			break;
		}
		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){
				l = m;
			}else r = m;
		}
		j = r + 1;
		rig --;
		rig = max(rig, 0);
	}
}

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