Submission #835460

# Submission time Handle Problem Language Result Execution time Memory
835460 2023-08-23T14:47:18 Z pavement Rarest Insects (IOI22_insects) C++17
90.3 / 100
181 ms 520 KB
#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 (!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;
			hi = mid - 1;
			for (auto i : to_remove) {
				my_move_outside(i);
				insects.pb(i);
			}
			alr_in.clear();
		}		
	}
	return ans;
}
# Verdict Execution time Memory Grader output
1 Correct 0 ms 208 KB Output is correct
2 Correct 1 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 1 ms 208 KB Output is correct
6 Correct 6 ms 292 KB Output is correct
7 Correct 3 ms 332 KB Output is correct
8 Correct 4 ms 336 KB Output is correct
9 Correct 7 ms 312 KB Output is correct
10 Correct 5 ms 208 KB Output is correct
11 Correct 3 ms 208 KB Output is correct
12 Correct 6 ms 208 KB Output is correct
13 Correct 4 ms 300 KB Output is correct
14 Correct 6 ms 208 KB Output is correct
15 Correct 4 ms 336 KB Output is correct
16 Correct 6 ms 312 KB Output is correct
17 Correct 6 ms 304 KB Output is correct
18 Correct 4 ms 296 KB Output is correct
19 Correct 6 ms 208 KB Output is correct
20 Correct 3 ms 208 KB Output is correct
21 Correct 4 ms 300 KB Output is correct
22 Correct 3 ms 208 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 0 ms 208 KB Output is correct
2 Correct 1 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 1 ms 208 KB Output is correct
6 Correct 6 ms 292 KB Output is correct
7 Correct 3 ms 332 KB Output is correct
8 Correct 4 ms 336 KB Output is correct
9 Correct 7 ms 312 KB Output is correct
10 Correct 5 ms 208 KB Output is correct
11 Correct 3 ms 208 KB Output is correct
12 Correct 6 ms 208 KB Output is correct
13 Correct 4 ms 300 KB Output is correct
14 Correct 6 ms 208 KB Output is correct
15 Correct 4 ms 336 KB Output is correct
16 Correct 6 ms 312 KB Output is correct
17 Correct 6 ms 304 KB Output is correct
18 Correct 4 ms 296 KB Output is correct
19 Correct 6 ms 208 KB Output is correct
20 Correct 3 ms 208 KB Output is correct
21 Correct 4 ms 300 KB Output is correct
22 Correct 3 ms 208 KB Output is correct
23 Correct 32 ms 384 KB Output is correct
24 Correct 12 ms 336 KB Output is correct
25 Correct 40 ms 372 KB Output is correct
26 Correct 43 ms 360 KB Output is correct
27 Correct 22 ms 296 KB Output is correct
28 Correct 18 ms 360 KB Output is correct
29 Correct 25 ms 296 KB Output is correct
30 Correct 18 ms 336 KB Output is correct
31 Correct 43 ms 304 KB Output is correct
32 Correct 73 ms 372 KB Output is correct
33 Correct 60 ms 424 KB Output is correct
34 Correct 43 ms 360 KB Output is correct
35 Correct 50 ms 380 KB Output is correct
36 Correct 38 ms 336 KB Output is correct
37 Correct 35 ms 368 KB Output is correct
38 Correct 28 ms 292 KB Output is correct
39 Correct 31 ms 336 KB Output is correct
40 Correct 24 ms 388 KB Output is correct
41 Correct 24 ms 364 KB Output is correct
# 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 0 ms 208 KB Output is correct
6 Correct 1 ms 208 KB Output is correct
7 Correct 97 ms 400 KB Output is correct
8 Correct 41 ms 336 KB Output is correct
9 Correct 105 ms 416 KB Output is correct
10 Partially correct 134 ms 388 KB Output is partially correct
11 Correct 51 ms 280 KB Output is correct
12 Correct 72 ms 356 KB Output is correct
13 Correct 61 ms 328 KB Output is correct
14 Correct 63 ms 296 KB Output is correct
15 Partially correct 179 ms 420 KB Output is partially correct
16 Partially correct 181 ms 416 KB Output is partially correct
17 Partially correct 152 ms 404 KB Output is partially correct
18 Partially correct 134 ms 292 KB Output is partially correct
19 Partially correct 128 ms 404 KB Output is partially correct
20 Partially correct 144 ms 412 KB Output is partially correct
21 Partially correct 100 ms 424 KB Output is partially correct
22 Partially correct 106 ms 400 KB Output is partially correct
23 Correct 70 ms 332 KB Output is correct
24 Correct 53 ms 368 KB Output is correct
25 Correct 79 ms 496 KB Output is correct
26 Correct 52 ms 360 KB Output is correct
27 Partially correct 108 ms 296 KB Output is partially correct
28 Partially correct 81 ms 408 KB Output is partially correct
29 Partially correct 92 ms 380 KB Output is partially correct
30 Partially correct 112 ms 408 KB Output is partially correct
31 Partially correct 135 ms 520 KB Output is partially correct
32 Partially correct 126 ms 388 KB Output is partially correct
33 Correct 79 ms 328 KB Output is correct
34 Correct 67 ms 304 KB Output is correct
35 Partially correct 97 ms 412 KB Output is partially correct
36 Partially correct 137 ms 404 KB Output is partially correct
37 Partially correct 127 ms 392 KB Output is partially correct
38 Partially correct 123 ms 328 KB Output is partially correct
39 Partially correct 86 ms 308 KB Output is partially correct
40 Partially correct 94 ms 308 KB Output is partially correct
41 Partially correct 147 ms 412 KB Output is partially correct
42 Partially correct 111 ms 408 KB Output is partially correct
43 Correct 14 ms 300 KB Output is correct
44 Correct 42 ms 296 KB Output is correct
45 Correct 94 ms 420 KB Output is correct
46 Correct 57 ms 364 KB Output is correct
47 Correct 70 ms 336 KB Output is correct
48 Correct 78 ms 380 KB Output is correct