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Submission #201535

# Submission time Handle Problem Language Result Execution time Memory
201535 2020-02-10T23:13:24 Z luciocf Hotter Colder (IOI10_hottercolder) C++14
79 / 100
 2594 ms 8312 KB 
#include <bits/stdc++.h>
#include "grader.h"
 
using namespace std;
 
int vez;
 
int HC(int n)
{
	srand(time(0));

	if (n == 1) return 1;
 
	int ini = 1, fim = n;
	int ant = 0, lado = 0;
 
	while (ini < fim)
	{
		if (fim-ini == 1)
		{
			if (lado == 0 || lado != ant)
			{
				Guess(ini);
				int g = Guess(fim);
	 
				return (g == -1 ? ini : fim);
			}
 
			if (lado == 1) return (Guess(fim) == -1 ? ini : fim);
			else return (Guess(ini) == -1 ? fim : ini);
		}
 
		int g;
 
		if (lado == 0 || lado != ant)
		{
			int toss = rand()%2;
 
			if (toss == 0)
			{
				Guess(ini);
				g = Guess(fim);
				ant = 2;
			}
			else
			{
				Guess(fim);
				g = Guess(ini);
				ant = 1;
			}
		}
		else if (lado == 1)
		{
			g = Guess(fim);
			ant = 2;
		}
		else
		{
			g = Guess(ini);
			ant = 1;
		}
 
		if (g == 0) return (ini+fim)/2;

		if (g == 1)
		{
			if (ant == 2) ini = (ini+fim)/2 + 1, lado = 2;
			else
			{
				int pre = fim;
 
				fim = (ini+fim)/2;
				if ((ini+pre)%2 == 0) fim--;
 
				lado = 1;
			}
		}
		else
		{
			if (ant == 1) ini = (ini+fim)/2 + 1, lado = 2;
			else
			{
				int pre = fim;
 
				fim = (ini+fim)/2;
				if ((ini+pre)%2 == 0) fim--;
 
				lado = 1;
			}
		}
	}
 
	return ini;
}

Subtask #1
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 237 ms 1400 KB Output is correct

Subtask #2
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 241 ms 1528 KB Output is correct

Subtask #3
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 239 ms 1272 KB Output is correct

Subtask #4
4.0 / 25.0

# Verdict Execution time Memory Grader output
1 Partially correct 2594 ms 8312 KB Output is partially correct - alpha = 0.153846153846