Submission #830985

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
830985	2023-08-19T14:31:14 Z	pavement	Counting Mushrooms (IOI20_mushrooms)	C++17	90.4 / 100	9 ms	404 KB

mushrooms

#include "mushrooms.h"
#include <bits/stdc++.h>
using namespace std;

#define pb push_back

const int k = 203;

int count_mushrooms(int n) {
	vector<int> m(n);
	if (n <= k) {
		for (int i = 1; i < n; i++) {
			m[i] = use_machine({0, i});
		}
		return count(m.begin(), m.end(), 0);
	}
	m[1] = use_machine({0, 1});
	m[2] = use_machine({0, 2});
	vector<int> sm;
	if (!m[1]) {
		sm = {0, 1};
	} else if (!m[2]) {
		sm = {0, 2};
	} else {
		sm = {1, 2};
	}
	for (int i = 3; i + 1 < k; i += 2) {
		int x = use_machine({sm[0], i, sm[1], i + 1});
		if (x == 0) {
			m[i] = m[i + 1] = m[sm[0]];
		} else if (x == 1) {
			m[i] = m[sm[0]];
			m[i + 1] = !m[sm[0]];
		} else if (x == 2) {
			m[i] = !m[sm[0]];
			m[i + 1] = m[sm[0]];
		} else if (x == 3) {
			m[i] = m[i + 1] = !m[sm[0]];
		}
	}
	int dom;
	if (count(m.begin(), m.begin() + k, 0) > count(m.begin(), m.begin() + k, 1)) dom = 0;
	else dom = 1;
	sm.clear();
	for (int i = 0; i < k; i++) {
		if (m[i] == dom) {
			sm.pb(i);
		}
	}
	int ans = count(m.begin(), m.begin() + k, 0);
	for (int i = k; i < n; ) {
		vector<int> cur;
		for (int j = i; j < min(n, i + (int)sm.size()); j++) {
			cur.pb(j);
			cur.pb(sm[j - i]);
		}
		int tmp = use_machine(cur);
		if (tmp % 2 == 0) {
			sm.pb(i);
		}
		int diff = (tmp + 1) / 2;
		if (dom == 0) {
			ans += (int)cur.size() / 2 - diff;
		} else {
			ans += diff;
		}
		i += (int)cur.size() / 2;
	}
	return ans;
}

Subtask #1

90.4 / 100.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	208 KB	Output is correct
2	Correct	0 ms	208 KB	Output is correct
3	Correct	0 ms	208 KB	Output is correct
4	Correct	0 ms	208 KB	Output is correct
5	Correct	2 ms	208 KB	Output is correct
6	Correct	2 ms	336 KB	Output is correct
7	Correct	5 ms	396 KB	Output is correct
8	Correct	5 ms	336 KB	Output is correct
9	Correct	5 ms	396 KB	Output is correct
10	Correct	5 ms	336 KB	Output is correct
11	Partially correct	8 ms	336 KB	Output is partially correct
12	Correct	5 ms	336 KB	Output is correct
13	Correct	4 ms	336 KB	Output is correct
14	Correct	3 ms	336 KB	Output is correct
15	Partially correct	9 ms	388 KB	Output is partially correct
16	Partially correct	4 ms	388 KB	Output is partially correct
17	Correct	5 ms	336 KB	Output is correct
18	Correct	8 ms	336 KB	Output is correct
19	Partially correct	4 ms	392 KB	Output is partially correct
20	Correct	8 ms	388 KB	Output is correct
21	Correct	5 ms	336 KB	Output is correct
22	Partially correct	5 ms	336 KB	Output is partially correct
23	Correct	5 ms	336 KB	Output is correct
24	Correct	4 ms	336 KB	Output is correct
25	Partially correct	5 ms	336 KB	Output is partially correct
26	Partially correct	5 ms	396 KB	Output is partially correct
27	Partially correct	5 ms	392 KB	Output is partially correct
28	Partially correct	8 ms	392 KB	Output is partially correct
29	Partially correct	7 ms	336 KB	Output is partially correct
30	Partially correct	5 ms	336 KB	Output is partially correct
31	Partially correct	5 ms	388 KB	Output is partially correct
32	Partially correct	8 ms	336 KB	Output is partially correct
33	Partially correct	5 ms	392 KB	Output is partially correct
34	Partially correct	5 ms	396 KB	Output is partially correct
35	Partially correct	5 ms	392 KB	Output is partially correct
36	Partially correct	6 ms	336 KB	Output is partially correct
37	Partially correct	5 ms	336 KB	Output is partially correct
38	Partially correct	4 ms	396 KB	Output is partially correct
39	Partially correct	5 ms	336 KB	Output is partially correct
40	Partially correct	5 ms	392 KB	Output is partially correct
41	Partially correct	7 ms	388 KB	Output is partially correct
42	Partially correct	5 ms	336 KB	Output is partially correct
43	Partially correct	5 ms	384 KB	Output is partially correct
44	Partially correct	6 ms	336 KB	Output is partially correct
45	Partially correct	7 ms	384 KB	Output is partially correct
46	Partially correct	7 ms	392 KB	Output is partially correct
47	Partially correct	7 ms	336 KB	Output is partially correct
48	Partially correct	6 ms	400 KB	Output is partially correct
49	Partially correct	7 ms	392 KB	Output is partially correct
50	Partially correct	5 ms	388 KB	Output is partially correct
51	Partially correct	6 ms	392 KB	Output is partially correct
52	Partially correct	5 ms	396 KB	Output is partially correct
53	Partially correct	8 ms	384 KB	Output is partially correct
54	Partially correct	7 ms	388 KB	Output is partially correct
55	Partially correct	5 ms	336 KB	Output is partially correct
56	Partially correct	7 ms	336 KB	Output is partially correct
57	Partially correct	5 ms	392 KB	Output is partially correct
58	Partially correct	5 ms	404 KB	Output is partially correct
59	Partially correct	5 ms	400 KB	Output is partially correct
60	Partially correct	5 ms	392 KB	Output is partially correct
61	Partially correct	6 ms	384 KB	Output is partially correct
62	Correct	0 ms	208 KB	Output is correct
63	Correct	0 ms	208 KB	Output is correct
64	Correct	0 ms	208 KB	Output is correct
65	Correct	0 ms	208 KB	Output is correct
66	Correct	0 ms	208 KB	Output is correct
67	Correct	0 ms	208 KB	Output is correct
68	Correct	0 ms	208 KB	Output is correct
69	Correct	1 ms	208 KB	Output is correct
70	Correct	0 ms	208 KB	Output is correct
71	Correct	0 ms	208 KB	Output is correct
72	Correct	1 ms	208 KB	Output is correct
73	Correct	0 ms	208 KB	Output is correct
74	Correct	1 ms	208 KB	Output is correct
75	Correct	0 ms	208 KB	Output is correct
76	Correct	0 ms	208 KB	Output is correct
77	Correct	0 ms	208 KB	Output is correct
78	Correct	0 ms	208 KB	Output is correct
79	Correct	0 ms	208 KB	Output is correct
80	Correct	0 ms	208 KB	Output is correct
81	Correct	0 ms	208 KB	Output is correct
82	Correct	0 ms	208 KB	Output is correct
83	Correct	0 ms	208 KB	Output is correct
84	Correct	0 ms	208 KB	Output is correct
85	Correct	1 ms	208 KB	Output is correct
86	Correct	1 ms	208 KB	Output is correct
87	Correct	1 ms	208 KB	Output is correct
88	Correct	0 ms	208 KB	Output is correct
89	Correct	0 ms	208 KB	Output is correct
90	Correct	0 ms	208 KB	Output is correct
91	Correct	0 ms	208 KB	Output is correct