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Submission #895847

# Submission time Handle Problem Language Result Execution time Memory
895847 2023-12-30T22:31:04 Z Macker Hotter Colder (IOI10_hottercolder) C++17
90 / 100
 509 ms 8280 KB 
#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, r / 3 + 1), N - ((N - l)/3));
      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
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 6744 KB Output is correct

Subtask #2
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 6748 KB Output is correct

Subtask #3
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 19 ms 6768 KB Output is correct

Subtask #4
15.0 / 25.0

# Verdict Execution time Memory Grader output
1 Partially correct 509 ms 8280 KB Output is partially correct - alpha = 0.600000000000