Submission #835469

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
835469	2023-08-23T14:52:35 Z	pavement	Rarest Insects (IOI22_insects)	C++17	93.52 / 100	142 ms	512 KB

insects

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

#define pb push_back

int N;
vector<int> machine;
vector<bool> in_set;

void my_move_inside(int x) {
	in_set[x] = 1;
}

void my_move_outside(int x) {
	in_set[x] = 0;
}

int my_press_button() {
	vector<int> cur;
	for (int i = 0; i < N; i++) {
		if (in_set[i]) {
			cur.pb(i);
		}
	}
	vector<int> tmp;
	set_symmetric_difference(cur.begin(), cur.end(), machine.begin(), machine.end(), back_inserter(tmp));
	sort(cur.begin(), cur.end());
	for (auto i : tmp) {
		if (binary_search(cur.begin(), cur.end(), i)) {
			move_inside(i);
		} else {
			move_outside(i);
		}
	}
	machine = cur;
	return press_button();
}

int min_cardinality(int N) {
	::N = N;
	in_set.resize(N);
	vector<int> v, alr_in;
	my_move_inside(0);
	v.pb(0);
	for (int i = 1; i < N; i++) {
		my_move_inside(i);
		if (my_press_button() != 1) {
			my_move_outside(i);
		} else {
			v.pb(i);
		}
	}
	vector<int> insects;
	insects.resize(N);
	iota(insects.begin(), insects.end(), 0);
	int lo = 1, hi = N / (int)v.size(), ans = -1;
	while (lo <= hi) {
		int mid = (lo + hi) / 2;
		vector<int> to_remove = alr_in;
		for (int i : insects) {
			if ((int)to_remove.size() == (int)v.size() * (mid - 1)) {
				break;
			}
			if (!binary_search(v.begin(), v.end(), i) && !binary_search(alr_in.begin(), alr_in.end(), i)) {
				my_move_inside(i);
				if (my_press_button() > mid) {
					my_move_outside(i);
				} else {
					to_remove.pb(i);
				}
			}
		}
		if ((int)to_remove.size() == (int)v.size() * (mid - 1)) {
			ans = mid;
			lo = mid + 1;
			alr_in = to_remove;
			sort(alr_in.begin(), alr_in.end());
		} else {
			insects = v;
			for (auto i : to_remove) {
				my_move_outside(i);
				insects.pb(i);
			}
			hi = min((int)insects.size() / (int)v.size(), mid - 1);
			alr_in.clear();
		}		
	}
	return ans;
}

Subtask #1
10.0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 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	1 ms	208 KB	Output is correct
5	Correct	1 ms	208 KB	Output is correct
6	Correct	5 ms	336 KB	Output is correct
7	Correct	2 ms	336 KB	Output is correct
8	Correct	5 ms	336 KB	Output is correct
9	Correct	7 ms	208 KB	Output is correct
10	Correct	3 ms	208 KB	Output is correct
11	Correct	2 ms	208 KB	Output is correct
12	Correct	4 ms	208 KB	Output is correct
13	Correct	4 ms	208 KB	Output is correct
14	Correct	6 ms	460 KB	Output is correct
15	Correct	6 ms	300 KB	Output is correct
16	Correct	8 ms	208 KB	Output is correct
17	Correct	4 ms	208 KB	Output is correct
18	Correct	5 ms	208 KB	Output is correct
19	Correct	6 ms	296 KB	Output is correct
20	Correct	3 ms	208 KB	Output is correct
21	Correct	3 ms	208 KB	Output is correct
22	Correct	2 ms	208 KB	Output is correct

Subtask #2
15.0 / 15.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 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	1 ms	208 KB	Output is correct
5	Correct	1 ms	208 KB	Output is correct
6	Correct	5 ms	336 KB	Output is correct
7	Correct	2 ms	336 KB	Output is correct
8	Correct	5 ms	336 KB	Output is correct
9	Correct	7 ms	208 KB	Output is correct
10	Correct	3 ms	208 KB	Output is correct
11	Correct	2 ms	208 KB	Output is correct
12	Correct	4 ms	208 KB	Output is correct
13	Correct	4 ms	208 KB	Output is correct
14	Correct	6 ms	460 KB	Output is correct
15	Correct	6 ms	300 KB	Output is correct
16	Correct	8 ms	208 KB	Output is correct
17	Correct	4 ms	208 KB	Output is correct
18	Correct	5 ms	208 KB	Output is correct
19	Correct	6 ms	296 KB	Output is correct
20	Correct	3 ms	208 KB	Output is correct
21	Correct	3 ms	208 KB	Output is correct
22	Correct	2 ms	208 KB	Output is correct
23	Correct	25 ms	376 KB	Output is correct
24	Correct	12 ms	384 KB	Output is correct
25	Correct	26 ms	376 KB	Output is correct
26	Correct	38 ms	440 KB	Output is correct
27	Correct	28 ms	328 KB	Output is correct
28	Correct	11 ms	336 KB	Output is correct
29	Correct	32 ms	328 KB	Output is correct
30	Correct	24 ms	336 KB	Output is correct
31	Correct	26 ms	336 KB	Output is correct
32	Correct	66 ms	300 KB	Output is correct
33	Correct	63 ms	372 KB	Output is correct
34	Correct	30 ms	380 KB	Output is correct
35	Correct	29 ms	336 KB	Output is correct
36	Correct	32 ms	380 KB	Output is correct
37	Correct	34 ms	336 KB	Output is correct
38	Correct	34 ms	308 KB	Output is correct
39	Correct	30 ms	336 KB	Output is correct
40	Correct	23 ms	348 KB	Output is correct
41	Correct	15 ms	336 KB	Output is correct

Subtask #3
68.52 / 75.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	332 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	0 ms	208 KB	Output is correct
6	Correct	0 ms	208 KB	Output is correct
7	Correct	56 ms	328 KB	Output is correct
8	Correct	53 ms	380 KB	Output is correct
9	Correct	75 ms	348 KB	Output is correct
10	Partially correct	134 ms	400 KB	Output is partially correct
11	Correct	61 ms	276 KB	Output is correct
12	Correct	52 ms	368 KB	Output is correct
13	Correct	62 ms	368 KB	Output is correct
14	Correct	69 ms	328 KB	Output is correct
15	Partially correct	137 ms	416 KB	Output is partially correct
16	Partially correct	137 ms	512 KB	Output is partially correct
17	Partially correct	134 ms	308 KB	Output is partially correct
18	Partially correct	114 ms	392 KB	Output is partially correct
19	Partially correct	110 ms	408 KB	Output is partially correct
20	Partially correct	140 ms	328 KB	Output is partially correct
21	Partially correct	98 ms	420 KB	Output is partially correct
22	Partially correct	107 ms	388 KB	Output is partially correct
23	Correct	66 ms	472 KB	Output is correct
24	Correct	46 ms	356 KB	Output is correct
25	Correct	48 ms	372 KB	Output is correct
26	Correct	35 ms	336 KB	Output is correct
27	Correct	76 ms	408 KB	Output is correct
28	Correct	57 ms	416 KB	Output is correct
29	Correct	95 ms	328 KB	Output is correct
30	Correct	104 ms	508 KB	Output is correct
31	Partially correct	121 ms	420 KB	Output is partially correct
32	Partially correct	132 ms	512 KB	Output is partially correct
33	Correct	76 ms	308 KB	Output is correct
34	Correct	56 ms	368 KB	Output is correct
35	Partially correct	90 ms	396 KB	Output is partially correct
36	Correct	83 ms	368 KB	Output is correct
37	Partially correct	142 ms	328 KB	Output is partially correct
38	Partially correct	129 ms	408 KB	Output is partially correct
39	Correct	81 ms	388 KB	Output is correct
40	Correct	52 ms	296 KB	Output is correct
41	Correct	87 ms	420 KB	Output is correct
42	Partially correct	87 ms	380 KB	Output is partially correct
43	Correct	13 ms	304 KB	Output is correct
44	Correct	39 ms	328 KB	Output is correct
45	Correct	55 ms	392 KB	Output is correct
46	Correct	45 ms	364 KB	Output is correct
47	Correct	50 ms	336 KB	Output is correct
48	Correct	50 ms	380 KB	Output is correct

Submission #835469

Compilation message

Subtask #1 10.0 / 10.0

Subtask #2 15.0 / 15.0

Subtask #3 68.52 / 75.0

Subtask #1
10.0 / 10.0

Subtask #2
15.0 / 15.0

Subtask #3
68.52 / 75.0