Submission #151853

#	Time	Username	Problem	Language	Result	Execution time	Memory
151853		davitmarg	Hotter Colder (IOI10_hottercolder)	C++17	51 / 100	780 ms	8188 KiB

hottercolder

/*DavitMarg*/
#include <iostream>
#include <algorithm>
#include <cmath>
#include <vector>
#include <string>
#include <cstring>
#include <map>
#include <unordered_map>
#include <set>
#include <queue>
#include <iomanip>
#include <stack>
#include <cassert>
#include <iterator>
#include <bitset>
#include <fstream>
#define mod 1000000007ll
#define LL long long  
#define LD long double
#define MP make_pair
#define PB push_back
#define all(v) v.begin(),v.end()
using namespace std;
#ifndef death
    #include "grader.h";
#endif
 
#ifdef death
 
 
int Guess(int a)
{
    cout<<"! "<<a<<endl;
    int res;
    cin>>res;
    return res; 
}
#endif
 
 
int HC(int n)
{
    int l=1;
    int r=n;
    int m;
    int ans,ord=1;
 
    Guess(l);
    while(l<=r)
    {
        m=(l+r)/2;
        if(l==r)
        {
            ans=m;
            break;
        }
        int res;
        if(ord)
            res=Guess(r);
        else
        {
            res=Guess(l);
            res*=-1;
        }
        
        if(res==0)
        {
            ans=m;
            break;
        }
        if(res==1)
        {
            //if(ord==0 && l!=r)
                Guess(r);
            l=m+1;
            ord=0;
        }
        else
        {
            //if(ord==1 && l!=r)
                Guess(l);
            r=m-1+(r-l)%2;
            ord=1;
        }
    }
    return ans;
}
 
 
#ifdef death
 
int main()
{
    
 
    cout<<HC(6)<<endl;
   
    return 0;
}
 
#endif
 
 
/*
 
 
*/

Compilation message (stderr)

hottercolder.cpp:26:24: warning: extra tokens at end of #include directive
     #include "grader.h";
                        ^
hottercolder.cpp: In function 'int HC(int)':
hottercolder.cpp:87:12: warning: 'ans' may be used uninitialized in this function [-Wmaybe-uninitialized]
     return ans;
            ^~~

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