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Submission #1042715

# Submission time Handle Problem Language Result Execution time Memory
1042715 2024-08-03T09:58:12 Z parsadox2 Counting Mushrooms (IOI20_mushrooms) C++17
92.2449 / 100
 5 ms 684 KB 
#include "mushrooms.h"
#include <bits/stdc++.h>

using namespace std;

int n;
vector <int> vec[2];


int count_mushrooms(int nn) {
	n = nn;
	vec[0].push_back(0);
	if(n <= 139)
	{
		for(int i = 1 ; i < n ; i++)
		{
			int c = use_machine({0 , i});
			vec[c].push_back(i);
		}
		return vec[0].size();
	}
	vec[use_machine({0 , 1})].push_back(1);
	vec[use_machine({0 , 2})].push_back(2);
	if(vec[0].size() < vec[1].size())
		swap(vec[0] , vec[1]);
	int m = min(n , 139);
	for(int i = 3 ; i + 1 < m ; i += 2)
	{
		int c = use_machine({vec[0][0] , i , vec[0][1] , i + 1});
		vec[c % 2].push_back(i + 1);
		vec[c / 2].push_back(i);
	}
	if(vec[0].size() < vec[1].size())
		swap(vec[0] , vec[1]);
	vector <int> rem;
	for(int i = m ; i < n ; i++)
		rem.push_back(i);
	int cnt[2];
	cnt[0] = cnt[1] = 0;
	while(!rem.empty())
	{
		vector <int> m;
		int tmp = 0;
		for(auto u : vec[0])
		{
			m.push_back(u);
			if(!rem.empty())
			{
				m.push_back(rem.back());
				rem.pop_back();
				tmp++;
			}
		}
		int c = use_machine(m);
		int val = (c + 1) / 2;
		cnt[1] += val;
		cnt[0] += tmp - val;
		if(tmp == vec[0].size())
		{
			if(c % 2 == 0)
			{
				cnt[0]--;
				vec[0].push_back(m.back());
			}
			else
			{
				cnt[1]--;
				vec[1].push_back(m.back());
			}
		}
		if(vec[0].size() < vec[1].size())
		{
			swap(vec[0] , vec[1]);
			swap(cnt[0] , cnt[1]);
		}
	}
	if(vec[0][0] == 0)
		return cnt[0] + vec[0].size();
	else
		return cnt[1] + vec[1].size();
}

Compilation message

mushrooms.cpp: In function 'int count_mushrooms(int)':
mushrooms.cpp:58:10: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   58 |   if(tmp == vec[0].size())
      |      ~~~~^~~~~~~~~~~~~~~~

Subtask #1
92.2449 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 1 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 1 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 Correct 3 ms 600 KB Output is correct
8 Correct 5 ms 600 KB Output is correct
9 Correct 4 ms 600 KB Output is correct
10 Correct 3 ms 600 KB Output is correct
11 Partially correct 3 ms 600 KB Output is partially correct
12 Correct 3 ms 600 KB Output is correct
13 Correct 2 ms 600 KB Output is correct
14 Correct 2 ms 344 KB Output is correct
15 Partially correct 5 ms 600 KB Output is partially correct
16 Partially correct 3 ms 600 KB Output is partially correct
17 Correct 2 ms 600 KB Output is correct
18 Correct 3 ms 600 KB Output is correct
19 Partially correct 3 ms 600 KB Output is partially correct
20 Correct 5 ms 600 KB Output is correct
21 Correct 3 ms 600 KB Output is correct
22 Partially correct 3 ms 600 KB Output is partially correct
23 Correct 3 ms 600 KB Output is correct
24 Correct 2 ms 344 KB Output is correct
25 Partially correct 3 ms 600 KB Output is partially correct
26 Partially correct 4 ms 600 KB Output is partially correct
27 Correct 4 ms 600 KB Output is correct
28 Partially correct 3 ms 600 KB Output is partially correct
29 Partially correct 3 ms 612 KB Output is partially correct
30 Partially correct 3 ms 600 KB Output is partially correct
31 Partially correct 3 ms 600 KB Output is partially correct
32 Partially correct 3 ms 600 KB Output is partially correct
33 Partially correct 4 ms 600 KB Output is partially correct
34 Partially correct 3 ms 684 KB Output is partially correct
35 Partially correct 3 ms 600 KB Output is partially correct
36 Partially correct 3 ms 600 KB Output is partially correct
37 Partially correct 3 ms 600 KB Output is partially correct
38 Partially correct 3 ms 600 KB Output is partially correct
39 Partially correct 3 ms 600 KB Output is partially correct
40 Partially correct 5 ms 600 KB Output is partially correct
41 Partially correct 3 ms 600 KB Output is partially correct
42 Partially correct 3 ms 600 KB Output is partially correct
43 Partially correct 3 ms 600 KB Output is partially correct
44 Partially correct 3 ms 600 KB Output is partially correct
45 Partially correct 3 ms 600 KB Output is partially correct
46 Partially correct 3 ms 600 KB Output is partially correct
47 Partially correct 4 ms 600 KB Output is partially correct
48 Partially correct 3 ms 600 KB Output is partially correct
49 Partially correct 3 ms 600 KB Output is partially correct
50 Partially correct 3 ms 600 KB Output is partially correct
51 Partially correct 3 ms 600 KB Output is partially correct
52 Partially correct 3 ms 600 KB Output is partially correct
53 Partially correct 3 ms 600 KB Output is partially correct
54 Partially correct 5 ms 600 KB Output is partially correct
55 Partially correct 5 ms 600 KB Output is partially correct
56 Partially correct 4 ms 600 KB Output is partially correct
57 Partially correct 3 ms 600 KB Output is partially correct
58 Partially correct 3 ms 600 KB Output is partially correct
59 Partially correct 5 ms 444 KB Output is partially correct
60 Partially correct 3 ms 596 KB Output is partially correct
61 Partially correct 5 ms 600 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 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 344 KB Output is correct
72 Correct 0 ms 344 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 1 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 0 ms 344 KB Output is correct
84 Correct 1 ms 344 KB Output is correct
85 Correct 1 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 1 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