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Submission #1015634

# Submission time Handle Problem Language Result Execution time Memory
1015634 2024-07-06T15:41:10 Z jairRS Counting Mushrooms (IOI20_mushrooms) C++17
56.5 / 100
 8 ms 600 KB 
#include "mushrooms.h"
#include <iostream>
using namespace std;

int count_mushrooms(int n)
{
	if (n <= 226)
	{
		int ans = 0;
		for (int i = 1; i < n; i++)
		{
			int x = use_machine({0, i});
			if (x == 0)
				ans++;
		}

		return ans + 1;
	}

	// n > 226

	int x = 101;

	vector<int> A, B;
	for (int i = 1; i <= 2 * x; i++)
	{
		int query = use_machine({0, i});
		if (query == 0)
			A.push_back(i);
		else
			B.push_back(i);
	}

	char big_group;
	vector<int> group;
	if (A.size() > B.size())
	{
		group = A;
		big_group = 'A';
	}
	else
	{
		group = B;
		big_group = 'B';
	}

	int ans = 0;
	for (int i = 2 * x + 1; i < n;)
	{
		vector<int> query = {group[0]}; // A ? A ? A ? A ? A ? A ? A
										// ^

		int next_mush = 1;
		int j = i;
		int unknown = 0;
		for (; j < i + x - 1; j++)
		{
			if (j >= n)
				break;

			query.push_back(j);
			query.push_back(group[next_mush]);
			unknown++;
			next_mush++;
		}
		i = j;

		int res = use_machine(query);
		cerr << res << '\n';

		// caso: terminamos temprano A ? A ? A

		if (big_group == 'A')
			ans += unknown - res / 2;
		else
			ans += res / 2;
	}

	cerr << A.size() << " " << ans << '\n';
	return 1 + A.size() + ans;
}

Subtask #1
56.5 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 1 ms 344 KB Output is correct
6 Correct 1 ms 344 KB Output is correct
7 Partially correct 4 ms 344 KB Output is partially correct
8 Partially correct 5 ms 344 KB Output is partially correct
9 Partially correct 4 ms 344 KB Output is partially correct
10 Partially correct 6 ms 444 KB Output is partially correct
11 Partially correct 5 ms 448 KB Output is partially correct
12 Partially correct 4 ms 344 KB Output is partially correct
13 Partially correct 7 ms 344 KB Output is partially correct
14 Partially correct 4 ms 600 KB Output is partially correct
15 Partially correct 4 ms 448 KB Output is partially correct
16 Partially correct 6 ms 344 KB Output is partially correct
17 Partially correct 3 ms 344 KB Output is partially correct
18 Partially correct 8 ms 344 KB Output is partially correct
19 Partially correct 5 ms 344 KB Output is partially correct
20 Partially correct 5 ms 344 KB Output is partially correct
21 Partially correct 5 ms 344 KB Output is partially correct
22 Partially correct 4 ms 344 KB Output is partially correct
23 Partially correct 5 ms 344 KB Output is partially correct
24 Partially correct 3 ms 344 KB Output is partially correct
25 Partially correct 4 ms 344 KB Output is partially correct
26 Partially correct 4 ms 344 KB Output is partially correct
27 Partially correct 5 ms 344 KB Output is partially correct
28 Partially correct 4 ms 344 KB Output is partially correct
29 Partially correct 5 ms 344 KB Output is partially correct
30 Partially correct 5 ms 600 KB Output is partially correct
31 Partially correct 4 ms 344 KB Output is partially correct
32 Partially correct 5 ms 344 KB Output is partially correct
33 Partially correct 4 ms 344 KB Output is partially correct
34 Partially correct 5 ms 344 KB Output is partially correct
35 Partially correct 5 ms 340 KB Output is partially correct
36 Partially correct 4 ms 344 KB Output is partially correct
37 Partially correct 4 ms 344 KB Output is partially correct
38 Partially correct 7 ms 344 KB Output is partially correct
39 Partially correct 4 ms 340 KB Output is partially correct
40 Partially correct 8 ms 344 KB Output is partially correct
41 Partially correct 4 ms 440 KB Output is partially correct
42 Partially correct 8 ms 344 KB Output is partially correct
43 Partially correct 5 ms 344 KB Output is partially correct
44 Partially correct 5 ms 344 KB Output is partially correct
45 Partially correct 5 ms 344 KB Output is partially correct
46 Partially correct 4 ms 344 KB Output is partially correct
47 Partially correct 5 ms 344 KB Output is partially correct
48 Partially correct 6 ms 344 KB Output is partially correct
49 Partially correct 5 ms 344 KB Output is partially correct
50 Partially correct 5 ms 600 KB Output is partially correct
51 Partially correct 7 ms 600 KB Output is partially correct
52 Partially correct 5 ms 344 KB Output is partially correct
53 Partially correct 5 ms 344 KB Output is partially correct
54 Partially correct 8 ms 456 KB Output is partially correct
55 Partially correct 5 ms 344 KB Output is partially correct
56 Partially correct 4 ms 344 KB Output is partially correct
57 Partially correct 5 ms 344 KB Output is partially correct
58 Partially correct 4 ms 344 KB Output is partially correct
59 Partially correct 4 ms 344 KB Output is partially correct
60 Partially correct 7 ms 344 KB Output is partially correct
61 Partially correct 4 ms 344 KB Output is partially correct
62 Correct 0 ms 344 KB Output is correct
63 Correct 0 ms 344 KB Output is correct
64 Correct 1 ms 344 KB Output is correct
65 Correct 0 ms 344 KB Output is correct
66 Correct 0 ms 344 KB Output is correct
67 Correct 0 ms 344 KB Output is correct
68 Correct 0 ms 344 KB Output is correct
69 Correct 0 ms 344 KB Output is correct
70 Correct 0 ms 344 KB Output is correct
71 Correct 0 ms 340 KB Output is correct
72 Correct 1 ms 340 KB Output is correct
73 Correct 0 ms 344 KB Output is correct
74 Correct 0 ms 344 KB Output is correct
75 Correct 0 ms 344 KB Output is correct
76 Correct 0 ms 344 KB Output is correct
77 Correct 0 ms 344 KB Output is correct
78 Correct 0 ms 344 KB Output is correct
79 Correct 0 ms 344 KB Output is correct
80 Correct 1 ms 344 KB Output is correct
81 Correct 0 ms 344 KB Output is correct
82 Correct 0 ms 344 KB Output is correct
83 Correct 0 ms 344 KB Output is correct
84 Correct 0 ms 344 KB Output is correct
85 Correct 0 ms 344 KB Output is correct
86 Correct 0 ms 344 KB Output is correct
87 Correct 0 ms 344 KB Output is correct
88 Correct 0 ms 344 KB Output is correct
89 Correct 0 ms 344 KB Output is correct
90 Correct 0 ms 344 KB Output is correct
91 Correct 0 ms 344 KB Output is correct