Submission #1029097

# Submission time Handle Problem Language Result Execution time Memory
1029097 2024-07-20T12:24:24 Z 42kangaroo Rarest Insects (IOI22_insects) C++17
99.82 / 100
48 ms 1272 KB
#include "insects.h"
#include "bits/stdc++.h"

using namespace std;

int min_cardinality(int N) {
	int nums = 0;
	set<int> inside, outside, aIn;
	vector<int> o(N);
	std::iota(o.begin(), o.end(),0);
	random_device dev;
	std::shuffle(o.begin(), o.end(), dev);
	for (int i = 0; i < N; ++i) {
		nums++;
		move_inside(o[i]);
		if (press_button() > 1) {
			if (i == N - 1) {
				aIn.insert(o[i]);
			} else {
				outside.insert(o[i]);
				move_outside(o[i]);
			}
		} else {
			if (i == N - 1) return 1;
			inside.insert(o[i]);
		}
	}
	int k = inside.size();
	int l = 1, r = N / k + 1;
	while (l + 1 < r) {
		int m = (l + r + 1) / 2;
		set<int> nIn, nOut;
		for (auto e: outside) {
			if ((inside.size() + nIn.size() + aIn.size()) == m * k) {
				nOut.insert(e);
			} else {
				nums++;
				move_inside(e);
				if (press_button() > m) {
					nOut.insert(e);
					move_outside(e);
				} else nIn.insert(e);
			}
		}
		if ((inside.size() + nIn.size() + aIn.size()) == m * k) {
			l = m;
			outside = nOut;
			inside.insert(nIn.begin(), nIn.end());
			inside.insert(aIn.begin(), aIn.end());
			aIn.clear();
		} else {
			r = min(m, (int)(inside.size() + nIn.size() + aIn.size())/k + 1);
			int nM = (l + r + 1) / 2 - l;
			nIn.insert(aIn.begin(), aIn.end());
			aIn.clear();
			for (int i = 0; i < nM && !nIn.empty(); ++i) {
				aIn.insert(*nIn.begin());
				nIn.erase(nIn.begin());
			}
			for (auto e: nIn) {
				move_outside(e);
			}
			outside = nIn;
		}
	}
	//if ((double)nums/(double)N > 3) return 0;
	return l;
}

Compilation message

insects.cpp: In function 'int min_cardinality(int)':
insects.cpp:34:50: warning: comparison of integer expressions of different signedness: 'std::set<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   34 |    if ((inside.size() + nIn.size() + aIn.size()) == m * k) {
      |        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~
insects.cpp:45:49: warning: comparison of integer expressions of different signedness: 'std::set<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   45 |   if ((inside.size() + nIn.size() + aIn.size()) == m * k) {
      |       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~
# Verdict Execution time Memory Grader output
1 Correct 0 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 0 ms 344 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 2 ms 444 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 3 ms 344 KB Output is correct
9 Correct 2 ms 344 KB Output is correct
10 Correct 3 ms 448 KB Output is correct
11 Correct 1 ms 600 KB Output is correct
12 Correct 4 ms 344 KB Output is correct
13 Correct 4 ms 344 KB Output is correct
14 Correct 2 ms 344 KB Output is correct
15 Correct 3 ms 344 KB Output is correct
16 Correct 2 ms 344 KB Output is correct
17 Correct 2 ms 344 KB Output is correct
18 Correct 3 ms 344 KB Output is correct
19 Correct 3 ms 344 KB Output is correct
20 Correct 2 ms 344 KB Output is correct
21 Correct 2 ms 344 KB Output is correct
22 Correct 1 ms 344 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 0 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 0 ms 344 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 2 ms 444 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 3 ms 344 KB Output is correct
9 Correct 2 ms 344 KB Output is correct
10 Correct 3 ms 448 KB Output is correct
11 Correct 1 ms 600 KB Output is correct
12 Correct 4 ms 344 KB Output is correct
13 Correct 4 ms 344 KB Output is correct
14 Correct 2 ms 344 KB Output is correct
15 Correct 3 ms 344 KB Output is correct
16 Correct 2 ms 344 KB Output is correct
17 Correct 2 ms 344 KB Output is correct
18 Correct 3 ms 344 KB Output is correct
19 Correct 3 ms 344 KB Output is correct
20 Correct 2 ms 344 KB Output is correct
21 Correct 2 ms 344 KB Output is correct
22 Correct 1 ms 344 KB Output is correct
23 Correct 10 ms 484 KB Output is correct
24 Correct 5 ms 344 KB Output is correct
25 Correct 16 ms 464 KB Output is correct
26 Correct 20 ms 600 KB Output is correct
27 Correct 13 ms 996 KB Output is correct
28 Correct 5 ms 344 KB Output is correct
29 Correct 12 ms 596 KB Output is correct
30 Correct 15 ms 344 KB Output is correct
31 Correct 18 ms 600 KB Output is correct
32 Correct 15 ms 600 KB Output is correct
33 Correct 11 ms 344 KB Output is correct
34 Correct 12 ms 344 KB Output is correct
35 Correct 13 ms 512 KB Output is correct
36 Correct 15 ms 512 KB Output is correct
37 Correct 15 ms 344 KB Output is correct
38 Correct 11 ms 344 KB Output is correct
39 Correct 13 ms 484 KB Output is correct
40 Correct 9 ms 600 KB Output is correct
41 Correct 4 ms 344 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 0 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 0 ms 344 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 25 ms 856 KB Output is correct
8 Correct 12 ms 600 KB Output is correct
9 Correct 38 ms 828 KB Output is correct
10 Correct 33 ms 1272 KB Output is correct
11 Correct 30 ms 728 KB Output is correct
12 Correct 7 ms 484 KB Output is correct
13 Correct 30 ms 724 KB Output is correct
14 Correct 32 ms 600 KB Output is correct
15 Correct 16 ms 760 KB Output is correct
16 Correct 27 ms 600 KB Output is correct
17 Correct 23 ms 600 KB Output is correct
18 Correct 32 ms 600 KB Output is correct
19 Correct 24 ms 592 KB Output is correct
20 Correct 32 ms 748 KB Output is correct
21 Correct 36 ms 532 KB Output is correct
22 Correct 28 ms 592 KB Output is correct
23 Correct 36 ms 920 KB Output is correct
24 Correct 23 ms 344 KB Output is correct
25 Correct 15 ms 344 KB Output is correct
26 Correct 11 ms 724 KB Output is correct
27 Correct 24 ms 856 KB Output is correct
28 Correct 15 ms 472 KB Output is correct
29 Correct 37 ms 772 KB Output is correct
30 Correct 25 ms 568 KB Output is correct
31 Correct 27 ms 604 KB Output is correct
32 Correct 36 ms 956 KB Output is correct
33 Partially correct 43 ms 588 KB Output is partially correct
34 Partially correct 48 ms 600 KB Output is partially correct
35 Correct 25 ms 724 KB Output is correct
36 Correct 37 ms 776 KB Output is correct
37 Correct 28 ms 708 KB Output is correct
38 Correct 30 ms 808 KB Output is correct
39 Correct 26 ms 792 KB Output is correct
40 Correct 20 ms 1244 KB Output is correct
41 Correct 28 ms 596 KB Output is correct
42 Correct 27 ms 568 KB Output is correct
43 Correct 6 ms 484 KB Output is correct
44 Correct 21 ms 792 KB Output is correct
45 Correct 22 ms 748 KB Output is correct
46 Correct 11 ms 344 KB Output is correct
47 Correct 16 ms 760 KB Output is correct
48 Correct 15 ms 748 KB Output is correct