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Submission #1054827

# Submission time Handle Problem Language Result Execution time Memory
1054827 2024-08-12T12:27:50 Z Gromp15 Counting Mushrooms (IOI20_mushrooms) C++17
63.1285 / 100
 7 ms 812 KB 
#include <bits/stdc++.h>
#include "mushrooms.h"
#define sz(x) (int)x.size()
using namespace std;

const int len = 115;

int count_mushrooms(int n) {
	for (int i = 0; i < 1; i++) {
		vector<int> tmp(n);
		iota(tmp.begin(), tmp.end(), 0);
		shuffle(tmp.begin(), tmp.end(), mt19937(std::chrono::steady_clock::now().time_since_epoch().count()));
		use_machine(tmp);
	}
	vector<int> A{0}, B;
	vector<int> idx(n-1);
	iota(idx.begin(), idx.end(), 1);
	shuffle(idx.begin(), idx.end(), mt19937(2134321));
	idx.insert(idx.begin(), -1);
	for (int i = 1; i < min(n, len * 2); i++) {
		if (i+1 < min(n, len * 2)) {
			int res = use_machine({idx[i], 0, idx[i+1]});
			if (res == 0) {
				A.push_back(idx[i]);
				A.push_back(idx[i+1]);
			}
			else if (res == 2) {
				B.push_back(idx[i]);
				B.push_back(idx[i+1]);
			}
			else {
				int res = use_machine({0, idx[i]});
				if (res == 0) A.push_back(idx[i]), B.push_back(idx[i+1]);
				else A.push_back(idx[i+1]), B.push_back(idx[i]);
			}
			i++;
		}
		else {
			(use_machine({0, idx[i]}) ? B : A).push_back(idx[i]);
		}
	}
	int ans = A.size();
	bool inv = 0;
	if (A.size() < B.size()) swap(A, B), inv = 1;
	/*
	for (int x : A) cout << x << " ";
	cout << '\n';
	for (int x : B) cout << x << " ";
	cout << '\n';
	*/
	vector<int> cur{A[0]};
	for (int j = len * 2, on = 1; j < n; j++) {
		if (on == sz(A)) {
			int res = use_machine(cur);
			ans += inv ? res / 2 : sz(cur) - sz(A) - res / 2;
			cur.clear();
			cur.emplace_back(A[0]);
			on = 1;
		}
		cur.emplace_back(idx[j]);
		cur.emplace_back(A[on++]);
	}
	//cout << "LST " << cur.size()<< '\n';
	if (cur.size() > 1) {
		int res = use_machine(cur);
		//cout << "R " << res << " " << ans << '\n';
		ans += inv ? res / 2 : sz(cur) / 2 - res / 2;
	}
	return ans;
}

Subtask #1
63.1285 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 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 Correct 4 ms 600 KB Output is correct
8 Correct 4 ms 600 KB Output is correct
9 Correct 4 ms 600 KB Output is correct
10 Partially correct 5 ms 600 KB Output is partially correct
11 Partially correct 5 ms 600 KB Output is partially correct
12 Partially correct 4 ms 600 KB Output is partially correct
13 Correct 5 ms 600 KB Output is correct
14 Partially correct 3 ms 344 KB Output is partially correct
15 Partially correct 5 ms 600 KB Output is partially correct
16 Partially correct 5 ms 600 KB Output is partially correct
17 Correct 3 ms 344 KB Output is correct
18 Partially correct 4 ms 604 KB Output is partially correct
19 Partially correct 5 ms 600 KB Output is partially correct
20 Partially correct 4 ms 600 KB Output is partially correct
21 Partially correct 5 ms 600 KB Output is partially correct
22 Partially correct 7 ms 600 KB Output is partially correct
23 Partially correct 6 ms 596 KB Output is partially correct
24 Partially correct 4 ms 344 KB Output is partially correct
25 Partially correct 5 ms 604 KB Output is partially correct
26 Partially correct 7 ms 600 KB Output is partially correct
27 Partially correct 5 ms 600 KB Output is partially correct
28 Partially correct 7 ms 600 KB Output is partially correct
29 Partially correct 4 ms 600 KB Output is partially correct
30 Partially correct 4 ms 600 KB Output is partially correct
31 Partially correct 5 ms 600 KB Output is partially correct
32 Partially correct 4 ms 600 KB Output is partially correct
33 Partially correct 5 ms 604 KB Output is partially correct
34 Partially correct 4 ms 600 KB Output is partially correct
35 Partially correct 7 ms 600 KB Output is partially correct
36 Partially correct 5 ms 600 KB Output is partially correct
37 Partially correct 5 ms 600 KB Output is partially correct
38 Partially correct 4 ms 600 KB Output is partially correct
39 Partially correct 4 ms 600 KB Output is partially correct
40 Partially correct 7 ms 600 KB Output is partially correct
41 Partially correct 7 ms 600 KB Output is partially correct
42 Partially correct 5 ms 600 KB Output is partially correct
43 Partially correct 5 ms 600 KB Output is partially correct
44 Partially correct 7 ms 600 KB Output is partially correct
45 Partially correct 5 ms 600 KB Output is partially correct
46 Partially correct 4 ms 600 KB Output is partially correct
47 Partially correct 5 ms 600 KB Output is partially correct
48 Partially correct 6 ms 600 KB Output is partially correct
49 Partially correct 5 ms 600 KB Output is partially correct
50 Partially correct 6 ms 600 KB Output is partially correct
51 Partially correct 4 ms 600 KB Output is partially correct
52 Partially correct 7 ms 600 KB Output is partially correct
53 Partially correct 5 ms 600 KB Output is partially correct
54 Partially correct 7 ms 600 KB Output is partially correct
55 Partially correct 7 ms 600 KB Output is partially correct
56 Partially correct 5 ms 600 KB Output is partially correct
57 Partially correct 5 ms 620 KB Output is partially correct
58 Partially correct 4 ms 600 KB Output is partially correct
59 Partially correct 4 ms 604 KB Output is partially correct
60 Partially correct 6 ms 600 KB Output is partially correct
61 Partially correct 7 ms 812 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 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 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