oj.uz

Submission #1018988

# Submission time Handle Problem Language Result Execution time Memory
1018988 2024-07-10T11:34:47 Z j_vdd16 Counting Mushrooms (IOI20_mushrooms) C++17
25 / 100
 87 ms 600 KB 
#include "mushrooms.h"

#include <algorithm>
#include <bitset>
#include <cstdint>
#include <cstring>
#include <iostream>
#include <limits.h>
#include <math.h>
#include <map>
#include <numeric>
#include <queue>
#include <set>
#include <stack>
#include <string>
#include <vector>

//#define int long long
#define loop(X, N) for(int X = 0; X < (N); X++)
#define all(V) V.begin(), V.end()
#define rall(V) V.rbegin(), V.rend()

using namespace std;

typedef vector<int> vi;
typedef vector<vi> vvi;
typedef pair<int, int> ii;
typedef vector<ii> vii;
typedef vector<vector<ii>> vvii;
typedef vector<bool> vb;
typedef vector<vector<bool>> vvb;

//int use_machine(vi x);

int count_mushrooms(int n)
{
	vi a = { 0 };
	vi b;

	int i = 1;
	/*for (; i < n; i++)
	{
		int res = use_machine({ 0, i });
		if (res == 0)
			a.push_back(i);
		else
			b.push_back(i);

		if (a.size() >= 2 && 2 * a.size() * a.size() >= n)
			break;

		if (b.size() >= 2 && 2 * b.size() * b.size() >= n)
			break;
	}
	i++;*/

	int result = a.size();
	while (i < n)
	{
		if (a.size() > b.size())
		{
			int sq = a.size();
			
			vi ask;
			int asked = min(sq, n - i);
			loop(j, asked)
			{
				ask.push_back(a[j]);
				ask.push_back(i++);
			}

			int res = use_machine(ask);
			result += asked - res / 2 - res % 2;
			if (res % 2)
				b.push_back(i - 1);
		}
		else
		{
			int sq = b.size();
			
			vi ask;
			loop(j, min(sq, n - i))
			{
				ask.push_back(b[j]);
				ask.push_back(i++);
			}

			int res = use_machine(ask);
			result += res / 2 + res % 2;
			if (res % 2)
				a.push_back(i - 1);
		}
	}

	//226 ~ log_2(20000)^2
	//226 / Q * 100 = 52,68
	//226 * 100 / 52,68 = 429

	//S = 2 * sqrt(n);
	//S + (n - S) / sqrt(n)
	//2sqrt(n) + sqrt(n) - 2
	//3sqrt(n)

	//min: 2 * n^x + (n - 2 * n^x) / n^x
	//min: 2 * n^x + n^(1 - x) >= 2 * sqrt(2 * n)
	return result;
}

Subtask #1
25.0 / 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 0 ms 344 KB Output is correct
6 Correct 1 ms 344 KB Output is correct
7 Partially correct 31 ms 344 KB Output is partially correct
8 Partially correct 12 ms 344 KB Output is partially correct
9 Partially correct 6 ms 600 KB Output is partially correct
10 Partially correct 4 ms 448 KB Output is partially correct
11 Partially correct 4 ms 344 KB Output is partially correct
12 Partially correct 4 ms 452 KB Output is partially correct
13 Partially correct 6 ms 344 KB Output is partially correct
14 Partially correct 3 ms 344 KB Output is partially correct
15 Partially correct 4 ms 344 KB Output is partially correct
16 Partially correct 4 ms 344 KB Output is partially correct
17 Partially correct 3 ms 344 KB Output is partially correct
18 Partially correct 5 ms 444 KB Output is partially correct
19 Partially correct 4 ms 444 KB Output is partially correct
20 Partially correct 4 ms 456 KB Output is partially correct
21 Partially correct 7 ms 344 KB Output is partially correct
22 Partially correct 4 ms 444 KB Output is partially correct
23 Partially correct 5 ms 344 KB Output is partially correct
24 Partially correct 23 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 4 ms 344 KB Output is partially correct
28 Partially correct 4 ms 344 KB Output is partially correct
29 Partially correct 60 ms 344 KB Output is partially correct
30 Partially correct 54 ms 344 KB Output is partially correct
31 Partially correct 50 ms 344 KB Output is partially correct
32 Partially correct 46 ms 340 KB Output is partially correct
33 Partially correct 62 ms 344 KB Output is partially correct
34 Partially correct 51 ms 344 KB Output is partially correct
35 Partially correct 55 ms 344 KB Output is partially correct
36 Partially correct 58 ms 344 KB Output is partially correct
37 Partially correct 63 ms 344 KB Output is partially correct
38 Partially correct 56 ms 344 KB Output is partially correct
39 Partially correct 62 ms 344 KB Output is partially correct
40 Partially correct 62 ms 344 KB Output is partially correct
41 Partially correct 58 ms 344 KB Output is partially correct
42 Partially correct 87 ms 344 KB Output is partially correct
43 Partially correct 50 ms 344 KB Output is partially correct
44 Partially correct 55 ms 344 KB Output is partially correct
45 Partially correct 48 ms 344 KB Output is partially correct
46 Partially correct 75 ms 344 KB Output is partially correct
47 Partially correct 58 ms 344 KB Output is partially correct
48 Partially correct 66 ms 344 KB Output is partially correct
49 Partially correct 57 ms 344 KB Output is partially correct
50 Partially correct 46 ms 344 KB Output is partially correct
51 Partially correct 62 ms 344 KB Output is partially correct
52 Partially correct 52 ms 344 KB Output is partially correct
53 Partially correct 51 ms 344 KB Output is partially correct
54 Partially correct 63 ms 344 KB Output is partially correct
55 Partially correct 66 ms 344 KB Output is partially correct
56 Partially correct 52 ms 344 KB Output is partially correct
57 Partially correct 56 ms 344 KB Output is partially correct
58 Partially correct 58 ms 344 KB Output is partially correct
59 Partially correct 61 ms 344 KB Output is partially correct
60 Partially correct 61 ms 344 KB Output is partially correct
61 Partially correct 63 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 0 ms 344 KB Output is correct
65 Correct 1 ms 344 KB Output is correct
66 Correct 1 ms 344 KB Output is correct
67 Correct 1 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 1 ms 344 KB Output is correct
71 Correct 0 ms 344 KB Output is correct
72 Correct 0 ms 344 KB Output is correct
73 Correct 1 ms 344 KB Output is correct
74 Correct 1 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 0 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 1 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 1 ms 344 KB Output is correct
90 Correct 0 ms 344 KB Output is correct
91 Correct 0 ms 344 KB Output is correct