oj.uz

Submission #1075717

# Submission time Handle Problem Language Result Execution time Memory
1075717 2024-08-26T08:48:11 Z Hugo1729 Counting Mushrooms (IOI20_mushrooms) C++17
56.927 / 100
 8 ms 600 KB 
#include "mushrooms.h"
#include <bits/stdc++.h>
using namespace std;

const int S = 200;

int bruteforce(int n){
	int ans=1;
	for (int i = 1; i < n; i+=2){
		vector<int> m;
		if(i==n-1)m={0,i};
		else m={i,0,i+1};
		ans+=m.size()-use_machine(m)-1;
	}
 
	// cout << "A: " << ans <<'\n';
 
	return ans;
}

int count_mushrooms(int n) {
	if(n<S+20)return bruteforce(n);

	vector<int> sus(S,0);

	for(int i=1;i<S;i++){
		sus[i]=sus[i-1];
		if(use_machine({i-1,i}))sus[i]^=1;
	}

	queue<int> q;
	for(int i=S;i<n;i++)q.push(i);

	vector<int> A,B;

	for(int i=0;i<S;i++){
		if(sus[i])B.push_back(i);
		else A.push_back(i);
	}

	int ans=A.size();

	
	while(!q.empty()){
		vector<int> m;

		if(A.size()>=B.size()){
			for(int i=0;i<A.size()&&!q.empty();i++){
				m.push_back(q.front());q.pop();
				m.push_back(A[i]);
			}
			int temp=use_machine(m);
			ans+=(m.size()/2)-((temp+1)/2);
		}else{
			for(int i=0;i<B.size()&&!q.empty();i++){
				m.push_back(q.front());q.pop();
				m.push_back(B[i]);
			}
			int temp=use_machine(m);
			ans+=((temp+1)/2);
		}
	}

	return ans;
}

Compilation message

mushrooms.cpp: In function 'int count_mushrooms(int)':
mushrooms.cpp:48:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   48 |    for(int i=0;i<A.size()&&!q.empty();i++){
      |                ~^~~~~~~~~
mushrooms.cpp:55:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   55 |    for(int i=0;i<B.size()&&!q.empty();i++){
      |                ~^~~~~~~~~

Subtask #1
56.927 / 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 1 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 2 ms 344 KB Output is correct
7 Partially correct 4 ms 344 KB Output is partially correct
8 Partially correct 6 ms 344 KB Output is partially correct
9 Partially correct 5 ms 444 KB Output is partially correct
10 Partially correct 4 ms 344 KB Output is partially correct
11 Partially correct 6 ms 344 KB Output is partially correct
12 Partially correct 5 ms 344 KB Output is partially correct
13 Partially correct 5 ms 440 KB Output is partially correct
14 Partially correct 4 ms 344 KB Output is partially correct
15 Partially correct 6 ms 436 KB Output is partially correct
16 Partially correct 6 ms 444 KB Output is partially correct
17 Partially correct 4 ms 440 KB Output is partially correct
18 Partially correct 4 ms 344 KB Output is partially correct
19 Partially correct 6 ms 444 KB Output is partially correct
20 Partially correct 4 ms 344 KB Output is partially correct
21 Partially correct 4 ms 344 KB Output is partially correct
22 Partially correct 6 ms 344 KB Output is partially correct
23 Partially correct 4 ms 440 KB Output is partially correct
24 Partially correct 3 ms 344 KB Output is partially correct
25 Partially correct 6 ms 440 KB Output is partially correct
26 Partially correct 5 ms 344 KB Output is partially correct
27 Partially correct 5 ms 444 KB Output is partially correct
28 Partially correct 6 ms 444 KB Output is partially correct
29 Partially correct 7 ms 344 KB Output is partially correct
30 Partially correct 7 ms 344 KB Output is partially correct
31 Partially correct 6 ms 440 KB Output is partially correct
32 Partially correct 5 ms 344 KB Output is partially correct
33 Partially correct 5 ms 344 KB Output is partially correct
34 Partially correct 5 ms 448 KB Output is partially correct
35 Partially correct 6 ms 344 KB Output is partially correct
36 Partially correct 5 ms 344 KB Output is partially correct
37 Partially correct 8 ms 344 KB Output is partially correct
38 Partially correct 7 ms 344 KB Output is partially correct
39 Partially correct 8 ms 344 KB Output is partially correct
40 Partially correct 7 ms 444 KB Output is partially correct
41 Partially correct 7 ms 444 KB Output is partially correct
42 Partially correct 5 ms 344 KB Output is partially correct
43 Partially correct 6 ms 344 KB Output is partially correct
44 Partially correct 6 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 5 ms 448 KB Output is partially correct
49 Partially correct 5 ms 444 KB Output is partially correct
50 Partially correct 6 ms 444 KB Output is partially correct
51 Partially correct 4 ms 444 KB Output is partially correct
52 Partially correct 7 ms 344 KB Output is partially correct
53 Partially correct 6 ms 344 KB Output is partially correct
54 Partially correct 7 ms 344 KB Output is partially correct
55 Partially correct 5 ms 344 KB Output is partially correct
56 Partially correct 5 ms 444 KB Output is partially correct
57 Partially correct 6 ms 344 KB Output is partially correct
58 Partially correct 6 ms 344 KB Output is partially correct
59 Partially correct 5 ms 344 KB Output is partially correct
60 Partially correct 5 ms 344 KB Output is partially correct
61 Partially correct 6 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 0 ms 344 KB Output is correct
79 Correct 1 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 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