Submission #1074312

#	Time	Username	Problem	Language	Result	Execution time	Memory
1074312		beaconmc	Hotter Colder (IOI10_hottercolder)	C++14	76.72 / 100	493 ms	24332 KiB

hottercolder

#include "grader.h"
#include <bits/stdc++.h>

typedef long long ll;

#define FOR(i,x,y) for(ll i=x; i<y; i++)
#define FORNEG(i,x,y) for(lli = x; i>y; i--)
using namespace std;

ll n;
map<ll,ll> sus;
ll cnt = 0;
int guess(ll a){

   if (a==0) return -1;
   if (a==n+1) return -1;
   cnt++;
   return  Guess(a);

}
int solve(int a, int b){
   //cout << a << " " << b << endl;

   if (a==b) return a;
   ll mid = (a+b)/2;
   ll midleft = (a+mid)/2;
   ll midright = (b+mid+1)/2;

   ll left = guess(midleft);
   ll right = guess(midright);


   if (right == 0 ){
      return (midleft+midright)/2;
   }
   else if (right == -1){
      if ((midleft+midright)%2==0)return solve(a, mid-1);
      else return solve(a,mid);
   }else{
      return solve(mid+1, b);
   }
}


int HC(int N){
   sus.clear();
   n = N;
   cnt = 0;
   ll ans = solve(1,N);
   //cout << ans << " " << cnt << endl;
   return ans;
}

Compilation message (stderr)

hottercolder.cpp: In function 'int solve(int, int)':
hottercolder.cpp:29:7: warning: unused variable 'left' [-Wunused-variable]
   29 |    ll left = guess(midleft);
      |       ^~~~

• Subtask 1: 25 / 25
• Subtask 2: 25 / 25
• Subtask 3: 25 / 25
• Subtask 4: 1.7241379300000002 / 25