Submission #895844

#	Time	Username	Problem	Language	Result	Execution time	Memory
895844		Macker	Hotter Colder (IOI10_hottercolder)	C++17	80 / 100	445 ms	8280 KiB

hottercolder

#include <bits/stdc++.h>
#include "grader.h"
 
using namespace std;

int HC(int N){
   int l = 1, r = N, mid;
   int ask = max(N  / 2, 1);
   Guess(ask);
   while(l < r){
      int nask = min(max(l + r - ask, 1), N);
      if(nask == ask) nask++;
      if(nask > N) nask = N - (ask == N);
      mid = (ask + nask) / 2;
      int g = Guess(nask);
      if(ask > nask) g = -g;
      if(g == 1) l = mid + 1;
      else if(g == -1){
         if((ask + nask) % 2 == 0) r = mid - 1;
         else r = mid;
      } 
      else return (ask + nask) / 2;

      ask = nask;
   }
   return l;
}

• Subtask 1: 25 / 25
• Subtask 2: 25 / 25
• Subtask 3: 25 / 25
• Subtask 4: 5 / 25