Submission #820704

#	Time	Username	Problem	Language	Result	Execution time	Memory
820704		vjudge1	The Big Prize (IOI17_prize)	C++17	20 / 100	34 ms	292 KiB

prize

#include "prize.h"
using namespace std;

int ans, N;

void rec(int l, int r){
	if (l < 0 || r > N || l > r)
		return ;
	else{
		int mid = (l + r)/2;
		//cout << l << " " << r << " " << mid << "\n";
		vector <int> q = ask(mid);
		if (q[0] > 0)
			rec(l, mid - 1);
		if (q[1] > 0)
			rec(mid + 1, r);
		if (q[0] == 0 && q[1] == 0)
			ans = mid;
	}
}

int find_best(int n) {
	N = n;
	rec(0, n - 1);
	return ans;
}

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