제출 #423107

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
423107		Pbezz	The Big Prize (IOI17_prize)	C++14	0 / 100	1 ms	320 KiB

prize

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

using namespace std;

#define ll long long
#define pb push_back
typedef pair<ll,ll> pii;

const ll MAXN=2e5+5;
const ll INF=1e9+7;


int find_best(int n) {
ll i;

	ll lo=0,hi=n-1,mid;

	while(hi-lo>=2){

	mid = lo+(hi-lo)/2;

	vector<int> res = ask(mid);
	if(res[0]+res[1]==0)return mid;

	if(res[0]==1){
	hi=mid;
	}else{
	lo=mid;
	}
}

	for(i=lo;i<=hi;i++){

	vector<int> res = ask(mid);
	if(res[0]+res[1]==0)return mid;


}





	return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

prize.cpp: In function 'int find_best(int)':
prize.cpp:35:27: warning: 'mid' may be used uninitialized in this function [-Wmaybe-uninitialized]
   35 |  vector<int> res = ask(mid);
      |                           ^

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