Submission #977376

#	Time	Username	Problem	Language	Result	Execution time	Memory
977376		mariaclara	The Big Prize (IOI17_prize)	C++17	20 / 100	3013 ms	1212 KiB

prize

#include "prize.h"
#include<bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef pair<int,int> pii;
#define all(x) x.begin(), x.end()
#define sz(x) (int)x.size()
#define mk make_pair
#define pb push_back
#define fr first
#define sc second

int find_best(int n) {
	int i = 0, at = 0;

	map<int,pii> resp;
	while(1) {
		// achar primeiro cara mais valioso doq um pirulito de indice maior que i
		int l = i, r = n-1;
		while(l <= r) {
			int mid = (l+r)/2;
			vector<int> aux;
			if(resp.count(mid) == 0) aux = ask(mid), resp[mid] = {aux[0],aux[1]};
			else aux = {resp[mid].fr};
			if(aux[0] > at) r = mid-1;
			else l = mid+1;
		}
		at++;
		i = r;
		vector<int> aux;
		if(resp.count(i) == 0) aux = ask(i), resp[i] = {aux[0], aux[1]};
		else aux = {resp[i].fr, resp[i].sc};
		if(aux[0] + aux[1] == 0) return i;
	}
}

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