Submission #292281

#	Time	Username	Problem	Language	Result	Execution time	Memory
292281		amiratou	Hotter Colder (IOI10_hottercolder)	C++14	77 / 100	842 ms	8184 KiB

hottercolder

#include "grader.h"
#include <bits/stdc++.h>
#define rando mt19937 rng(chrono::steady_clock::now().time_since_epoch().count())
using namespace std;

int HC(int N){
	if(N==1)return 1;
	if(N==2){
		Guess(1);
		if(Guess(2)==1)return 2;
		return 1;
	}
	int l=1,r=N,a,b,B,med,h;
	while((r-l+1)>3){
		a=l+(r-l)/3,b=r-(r-l)/3;
		med=(a+b)>>1;
		Guess(a),B=Guess(b);
		if(!B)return (a+b)/2;
		if(B==1)l=med+1;
		else r=med-(!((a+b)&1));
	}
	Guess(l),h=Guess(r);
	if(!h)return l+1;
	else if(h==1)return r;
	return l;
}

• Subtask 1: 25 / 25
• Subtask 2: 25 / 25
• Subtask 3: 25 / 25
• Subtask 4: 2 / 25