제출 #1181003

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1181003		hamzabc	Hotter Colder (IOI10_hottercolder)	C++20	0 / 100	10094 ms	8000 KiB

hottercolder

#include "grader.h"

int max(int a, int b){
   if (a > b)
      return a;
   return b;
}

int min(int a, int b){
   if (a < b)
      return a;
   return b;
}

int HC(int N){
   int l = 1, r = N, gl = (l + r - 1) >> 1, gr = gl + 2, k = 0;
   Guess(gl);
   int d = Guess(gr);
   while (l != r){
      if (d == 0){
         return (gl + gr) >> 1;
      }else if (d == 1){
         if (k == 0){
            r = (gl + gr - 1) / 2;
            gl = max(l, l + r - gr);
            d = Guess(gl);
         }else{
            l = (gl + gr) / 2 + 1;
            gr = min(r, l + r - gl);
            d = Guess(gr);
         }
         k = 1 - k;
      }else{
         if (k == 0){
            l = (gl + gr) / 2 + 1;
            if (gr == gl + 2)
               gl = max(l, l + r - gr);
            else{
               gl = (l + r - 1) >> 1;
               gr = gl + 2;
               k = 1;
            }
         }else{
            r = (gl + gr - 1) / 2;
            if (gr == gl + 2)
               gr = min(r, l + r - gl);
            else{
               gl = (l + r - 1) >> 1;
               gr = gl + 2;
               k = 1;
            }
         }
         k = 1 - k;
      }
   }
   return l;
}

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