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Submission #244047

# Submission time Handle Problem Language Result Execution time Memory
244047 2020-07-02T13:56:55 Z johutha Hotter Colder (IOI10_hottercolder) C++17
78 / 100
 846 ms 24184 KB 
#include "grader.h"
#include <iostream>

using namespace std;

int HC(int n)
{
	Guess(1);
	int l = 1, r = n;
	int last = 1;
   	while (l < r)
   	{
		int ot = l;
		if (2*last < (l + r)) ot = r;
		int m = (last + ot);
		int rs = Guess(ot);
		// cerr << l << " " << r << " " << ot << " " << m << " " << last << "\n";
		if (rs == 0) return m/2;
		if ((rs == -1) ^ (ot > last))
		{
			l = m/2 + 1;
		}
		else
		{
			r = m/2 - 1 + (m % 2);
		}
		last = ot;
   	}
	return l;
}

Subtask #1
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 28 ms 1400 KB Output is correct

Subtask #2
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 29 ms 1280 KB Output is correct

Subtask #3
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 29 ms 1280 KB Output is correct

Subtask #4
3.0 / 25.0

# Verdict Execution time Memory Grader output
1 Partially correct 846 ms 24184 KB Output is partially correct - alpha = 0.120000000000