제출 #548880

#제출 시각아이디문제언어결과실행 시간메모리
548880esomerThe Big Prize (IOI17_prize)C++17
20 / 100
1 ms296 KiB
#include "prize.h"
#include<bits/stdc++.h>

using namespace std;

int find_best(int n) {
	int lo = 0;
	int hi = n - 1;
	while(lo <= hi){
		int mid = (lo + hi) / 2;
		vector<int> rep = ask(mid);
		if(rep[0] == 1){
			hi = mid - 1;
		}else if(rep[1] == 1){
			lo = mid + 1;
		}else{
			return mid;
		}
	}
	return -1;
}
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