Submission #1192771

#	Time	Username	Problem	Language	Result	Execution time	Memory
1192771		Muhammet	The Big Prize (IOI17_prize)	C++20	20 / 100	23 ms	408 KiB

prize

#include "bits/stdc++.h"
#include "prize.h"
// #include "grader.cpp"

using namespace std;

int find_best(int n) {
	int x = 0;
	vector <int> v = ask(x), v1, v2;
	while(1) {
		int l = x, r = n-1, k = (x + int(sqrt(n) / 2));
		if(v[0] + v[1] == 0) return x;
		if(k < n) {
			if(ask(k) == v) l = k;
			else r = k;
		}
		while(l <= r) {
			int md = (l + r) / 2;
			v1 = ask(md);
			if(v1 == v) l = md+1;
			else r = md-1, x = md, v2 = v1;
		}
		v = v2;
	}
	assert(0);
}

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