Submission #96309

#	Time	Username	Problem	Language	Result	Execution time	Memory
96309		figter001	The Big Prize (IOI17_prize)	C++14	20 / 100	121 ms	1080 KiB

prize

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

using namespace std;

typedef long long ll;
const int maxn = 2e5+50;

int l,r,dp[maxn],ans;

void qu(int a){
	if(dp[a])return;
	dp[a] = 1;
	vector<int> res = ask(a);
	if(res[0] + res[1] == 1){
		if(res[0])r = a-1;
		else l = a+1;
	}
	if(res[0] + res[1] == 0){
		ans = a;
	}
}

int find_best(int n) {
	srand(time(0));
	l=0;r=n-1;
	ans = -1;
	while(1){
		int a = l + (rand() % (r-l+1));
		qu(a);
		if(ans != -1)return ans;
	}
	int a = l + (rand() % (r-l+1));
	return a;
}

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