Submission #1088089

#	Time	Username	Problem	Language	Result	Execution time	Memory
1088089		StefanSebez	Hotter Colder (IOI10_hottercolder)	C++14	50 / 100	733 ms	24400 KiB

hottercolder

#include "grader.h"
#include<bits/stdc++.h>
using namespace std;
#define fi first
#define se second
#define pb push_back
#define ll long long
#define ld long double
int HC(int n){
	//for(int i=1;i<=50;i++){for(int j=1;j<=i;j++) printf("%i %i\n",i,j);}
	int l=1,r=n,ct=0,res=0;
	vector<pair<int,int> >a;
	while(l<=r){
		//printf("%i %i\n",l,r);
		if(l==r){res=l;break;}
		int mid=l+r>>1;
		if(ct%2==0 || r-l<=3){
			a.pb({Guess(mid),mid});
			a.pb({Guess(mid+1),mid+1});
			if(a.back().fi==-1) r=mid;
			else l=mid+1;
		}
		else{
			if(a.back().se<=mid){
				int k=(r-l+1)/4;
				mid=l+3*k;
				//printf("%i\n",mid);
				a.pb({Guess(mid),mid});
				int sledeci=l+mid>>1;
				if(a.back().fi==1) l=sledeci;
				else r=sledeci;
			}
			else{
				int k=(r-l+1)/4;
				mid=l+k;
				//printf("%i\n",mid);
				a.pb({Guess(mid),mid});
				int sledeci=mid+r+1>>1;
				if(a.back().fi==1) r=sledeci;
				else l=sledeci;
			}
		}
		ct++;
	}
	return res;
}

Compilation message (stderr)

hottercolder.cpp: In function 'int HC(int)':
hottercolder.cpp:16:12: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   16 |   int mid=l+r>>1;
      |           ~^~
hottercolder.cpp:29:18: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   29 |     int sledeci=l+mid>>1;
      |                 ~^~~~
hottercolder.cpp:38:22: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   38 |     int sledeci=mid+r+1>>1;
      |                 ~~~~~^~

• Subtask 1: 25 / 25
• Subtask 2: 25 / 25
• Subtask 3: 0 / 25
• Subtask 4: 0 / 25