oj.uz

Submission #419739

# Submission time Handle Problem Language Result Execution time Memory
419739 2021-06-07T12:05:23 Z KoD Counting Mushrooms (IOI20_mushrooms) C++17
92.623 / 100
 11 ms 336 KB 
#include <bits/stdc++.h>
#include "mushrooms.h"

template <class T> using Vec = std::vector<T>;

constexpr int NAIVE = 80;

int count_mushrooms(int n) {
	if (n <= 227) {
		int ret = 1;
		for (int i = 1; i < n; ++i) {
			ret += 1 - use_machine(Vec<int>{0, i});
		}
		return ret;
	}
	Vec<int> a, b;
	a.push_back(0);
	(use_machine(Vec<int>{0, 1}) ? b : a).push_back(1);
	(use_machine(Vec<int>{0, 2}) ? b : a).push_back(2);
	int seen = 3;
	if ((int) a.size() >= 2) {
		while ((int) std::max(a.size(), b.size()) < NAIVE) {
			Vec<int> ask;
			ask.push_back(seen);
			ask.push_back(a[0]);
			ask.push_back(seen + 1);
			ask.push_back(a[1]);
			const auto rsp = use_machine(ask);
			for (int k = 0; k < 2; ++k) {
				((rsp >> k & 1) ? b : a).push_back(seen + k);
			}
			seen += 2;
		}
	} else {
		while ((int) std::max(a.size(), b.size()) < NAIVE) {
			Vec<int> ask;
			ask.push_back(seen);
			ask.push_back(b[0]);
			ask.push_back(seen + 1);
			ask.push_back(b[1]);
			const auto rsp = use_machine(ask);
			for (int k = 0; k < 2; ++k) {
				((rsp >> k & 1) ? a : b).push_back(seen + k);
			}
			seen += 2;
		}
	}
	int ret = (int) a.size();
	while (seen < n) {
		if (a.size() > b.size()) {
			Vec<int> ask;
			for (int i = 0; i < (int) a.size() and seen < n; ++i) {
				ask.push_back(a[i]);
				ask.push_back(seen++);
			}
			const auto rsp = use_machine(ask);
			ret += (int) ask.size() / 2;
			ret -= (rsp + 1) / 2;
			(rsp % 2 == 0 ? a : b).push_back(ask.back());
		} else {
			Vec<int> ask;
			for (int i = 0; i < (int) b.size() and seen < n; ++i) {
				ask.push_back(b[i]);
				ask.push_back(seen++);
			}
			const auto rsp = use_machine(ask);
			ret += (rsp + 1) / 2;
			(rsp % 2 == 0 ? b : a).push_back(ask.back());
		}
	}
	return ret;
}

Subtask #1
92.623 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 200 KB Output is correct
2 Correct 1 ms 200 KB Output is correct
3 Correct 2 ms 200 KB Output is correct
4 Correct 1 ms 200 KB Output is correct
5 Correct 3 ms 200 KB Output is correct
6 Correct 3 ms 200 KB Output is correct
7 Correct 8 ms 200 KB Output is correct
8 Correct 7 ms 320 KB Output is correct
9 Correct 9 ms 200 KB Output is correct
10 Correct 7 ms 200 KB Output is correct
11 Partially correct 7 ms 316 KB Output is partially correct
12 Correct 11 ms 200 KB Output is correct
13 Correct 9 ms 200 KB Output is correct
14 Correct 6 ms 328 KB Output is correct
15 Partially correct 11 ms 300 KB Output is partially correct
16 Partially correct 7 ms 200 KB Output is partially correct
17 Correct 5 ms 324 KB Output is correct
18 Correct 7 ms 328 KB Output is correct
19 Partially correct 11 ms 308 KB Output is partially correct
20 Correct 9 ms 200 KB Output is correct
21 Correct 8 ms 200 KB Output is correct
22 Partially correct 10 ms 308 KB Output is partially correct
23 Correct 9 ms 316 KB Output is correct
24 Correct 3 ms 320 KB Output is correct
25 Partially correct 7 ms 308 KB Output is partially correct
26 Partially correct 6 ms 200 KB Output is partially correct
27 Partially correct 7 ms 304 KB Output is partially correct
28 Partially correct 7 ms 200 KB Output is partially correct
29 Partially correct 8 ms 308 KB Output is partially correct
30 Partially correct 7 ms 200 KB Output is partially correct
31 Partially correct 7 ms 328 KB Output is partially correct
32 Partially correct 9 ms 308 KB Output is partially correct
33 Partially correct 8 ms 200 KB Output is partially correct
34 Partially correct 10 ms 316 KB Output is partially correct
35 Partially correct 7 ms 328 KB Output is partially correct
36 Partially correct 7 ms 200 KB Output is partially correct
37 Partially correct 9 ms 200 KB Output is partially correct
38 Partially correct 7 ms 200 KB Output is partially correct
39 Partially correct 7 ms 328 KB Output is partially correct
40 Partially correct 7 ms 200 KB Output is partially correct
41 Partially correct 9 ms 320 KB Output is partially correct
42 Partially correct 9 ms 200 KB Output is partially correct
43 Partially correct 7 ms 316 KB Output is partially correct
44 Partially correct 8 ms 200 KB Output is partially correct
45 Partially correct 7 ms 320 KB Output is partially correct
46 Partially correct 6 ms 320 KB Output is partially correct
47 Partially correct 8 ms 320 KB Output is partially correct
48 Partially correct 11 ms 308 KB Output is partially correct
49 Partially correct 9 ms 320 KB Output is partially correct
50 Partially correct 7 ms 324 KB Output is partially correct
51 Partially correct 6 ms 336 KB Output is partially correct
52 Partially correct 7 ms 200 KB Output is partially correct
53 Partially correct 8 ms 200 KB Output is partially correct
54 Partially correct 9 ms 316 KB Output is partially correct
55 Partially correct 9 ms 200 KB Output is partially correct
56 Partially correct 8 ms 316 KB Output is partially correct
57 Partially correct 9 ms 200 KB Output is partially correct
58 Partially correct 8 ms 312 KB Output is partially correct
59 Partially correct 8 ms 308 KB Output is partially correct
60 Partially correct 9 ms 200 KB Output is partially correct
61 Partially correct 8 ms 200 KB Output is partially correct
62 Correct 0 ms 200 KB Output is correct
63 Correct 0 ms 200 KB Output is correct
64 Correct 0 ms 200 KB Output is correct
65 Correct 0 ms 200 KB Output is correct
66 Correct 1 ms 200 KB Output is correct
67 Correct 1 ms 200 KB Output is correct
68 Correct 1 ms 200 KB Output is correct
69 Correct 0 ms 200 KB Output is correct
70 Correct 1 ms 200 KB Output is correct
71 Correct 1 ms 200 KB Output is correct
72 Correct 1 ms 200 KB Output is correct
73 Correct 1 ms 200 KB Output is correct
74 Correct 0 ms 200 KB Output is correct
75 Correct 0 ms 200 KB Output is correct
76 Correct 1 ms 200 KB Output is correct
77 Correct 0 ms 200 KB Output is correct
78 Correct 0 ms 200 KB Output is correct
79 Correct 0 ms 200 KB Output is correct
80 Correct 1 ms 200 KB Output is correct
81 Correct 1 ms 200 KB Output is correct
82 Correct 1 ms 200 KB Output is correct
83 Correct 1 ms 200 KB Output is correct
84 Correct 1 ms 200 KB Output is correct
85 Correct 1 ms 200 KB Output is correct
86 Correct 1 ms 200 KB Output is correct
87 Correct 0 ms 200 KB Output is correct
88 Correct 1 ms 200 KB Output is correct
89 Correct 0 ms 200 KB Output is correct
90 Correct 0 ms 200 KB Output is correct
91 Correct 1 ms 200 KB Output is correct