Submission #137043

#	Time	Username	Problem	Language	Result	Execution time	Memory
137043		StevenH	Hotter Colder (IOI10_hottercolder)	C++14	25 / 100	10010 ms	8184 KiB

hottercolder

#include "grader.h"
#include <cstdio>
using namespace std;
int left,right;
bool last;
int HC(int N){
	if(N==1)return 1;
	Guess(1);
	int res1 = Guess(2);
	if(N==2)
	{
		if(res1==1)return 2;
		else return 1;
	}
	int res2;
	//printf("%d\n",N);
	for(int i=3;i<=N;i++)
	{
		res2 = Guess(i);
		//printf("%d*",res2);
		if(res2 != res1)
		{
			if(res2==1)return i;
			if(res2==-1)return i-1;
		}
		else res1=res2;
	}
	if(res2==1)return N;
	else return 1;
	/*
	//printf("%d\n",N);
    left=1,right=N;
    last = 0;
    Guess(left);
    while(left+1 < right)
    {
    	//printf("%d %d\n",left,right);
    	int res;
    	int mid=(left+right)/2;
 		if(last==0)
 		{
 			res = Guess(right);
 			if(res == -1)
 			{
 				right = mid;
 				Guess(left);
 				last = 0;
 			}
 			else if(res == 1)
 			{

 				left = mid;
 				last = 1;	//next is left
 			}
 			else if(res == 0)
 			{
 				return mid;
 			}
 		}
 		else
 		{
 			res = Guess(left);
 			if(res == -1)
 			{
 				left = mid;
 				Guess(right);
 				last = 1;
 			}
 			else if(res == 1)
 			{
 				right = mid;
 				last = 0;	//next is left
 			}
 			else if(res == 0)
 			{
 				return mid;
 			}
 		}

    }
    
    if(right == left+1)
    {
    	//printf("%d\n",last);
    	int res;
    	if(last == 0)
    	{
    		res = Guess(right);
    		if(res == 1)return right;
    		else return left;
    	}
    	else if(last == 1)
    	{
    		res = Guess(left);
    		if(res == 1)return left;
    		else return right;
    	}
    }*/
}

Compilation message (stderr)

hottercolder.cpp: In function 'int HC(int)':
hottercolder.cpp:28:2: warning: 'res2' may be used uninitialized in this function [-Wmaybe-uninitialized]
  if(res2==1)return N;
  ^~

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