답안 #835471

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
835471 2023-08-23T14:55:03 Z pavement 드문 곤충 (IOI22_insects) C++17
93.54 / 100
167 ms 560 KB
#include "insects.h"
#include <bits/stdc++.h>
using namespace std;

#define pb push_back

mt19937 rng(12345);

int N;
vector<int> machine, perm;
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(perm[i]);
		} else {
			move_outside(perm[i]);
		}
	}
	machine = cur;
	return press_button();
}

int min_cardinality(int N) {
	::N = N;
	in_set.resize(N);
	perm.resize(N);
	iota(perm.begin(), perm.end(), 0);
	shuffle(perm.begin(), perm.end(), rng);
	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;
}
# 결과 실행 시간 메모리 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 0 ms 208 KB Output is correct
6 Correct 4 ms 352 KB Output is correct
7 Correct 3 ms 336 KB Output is correct
8 Correct 3 ms 336 KB Output is correct
9 Correct 6 ms 324 KB Output is correct
10 Correct 4 ms 208 KB Output is correct
11 Correct 2 ms 208 KB Output is correct
12 Correct 5 ms 208 KB Output is correct
13 Correct 3 ms 208 KB Output is correct
14 Correct 4 ms 336 KB Output is correct
15 Correct 5 ms 336 KB Output is correct
16 Correct 5 ms 316 KB Output is correct
17 Correct 6 ms 336 KB Output is correct
18 Correct 5 ms 300 KB Output is correct
19 Correct 5 ms 208 KB Output is correct
20 Correct 3 ms 208 KB Output is correct
21 Correct 4 ms 208 KB Output is correct
22 Correct 3 ms 312 KB Output is correct
# 결과 실행 시간 메모리 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 0 ms 208 KB Output is correct
6 Correct 4 ms 352 KB Output is correct
7 Correct 3 ms 336 KB Output is correct
8 Correct 3 ms 336 KB Output is correct
9 Correct 6 ms 324 KB Output is correct
10 Correct 4 ms 208 KB Output is correct
11 Correct 2 ms 208 KB Output is correct
12 Correct 5 ms 208 KB Output is correct
13 Correct 3 ms 208 KB Output is correct
14 Correct 4 ms 336 KB Output is correct
15 Correct 5 ms 336 KB Output is correct
16 Correct 5 ms 316 KB Output is correct
17 Correct 6 ms 336 KB Output is correct
18 Correct 5 ms 300 KB Output is correct
19 Correct 5 ms 208 KB Output is correct
20 Correct 3 ms 208 KB Output is correct
21 Correct 4 ms 208 KB Output is correct
22 Correct 3 ms 312 KB Output is correct
23 Correct 29 ms 384 KB Output is correct
24 Correct 12 ms 336 KB Output is correct
25 Correct 29 ms 304 KB Output is correct
26 Correct 47 ms 304 KB Output is correct
27 Correct 20 ms 308 KB Output is correct
28 Correct 15 ms 360 KB Output is correct
29 Correct 29 ms 328 KB Output is correct
30 Correct 28 ms 312 KB Output is correct
31 Correct 34 ms 376 KB Output is correct
32 Correct 57 ms 372 KB Output is correct
33 Correct 41 ms 308 KB Output is correct
34 Correct 41 ms 368 KB Output is correct
35 Correct 41 ms 380 KB Output is correct
36 Correct 34 ms 328 KB Output is correct
37 Correct 33 ms 380 KB Output is correct
38 Correct 26 ms 308 KB Output is correct
39 Correct 31 ms 372 KB Output is correct
40 Correct 27 ms 336 KB Output is correct
41 Correct 14 ms 328 KB Output is correct
# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 208 KB Output is correct
2 Correct 0 ms 216 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 1 ms 208 KB Output is correct
7 Correct 56 ms 420 KB Output is correct
8 Correct 33 ms 392 KB Output is correct
9 Correct 80 ms 304 KB Output is correct
10 Partially correct 114 ms 388 KB Output is partially correct
11 Correct 60 ms 292 KB Output is correct
12 Correct 50 ms 380 KB Output is correct
13 Correct 61 ms 292 KB Output is correct
14 Correct 70 ms 308 KB Output is correct
15 Partially correct 144 ms 560 KB Output is partially correct
16 Partially correct 129 ms 552 KB Output is partially correct
17 Partially correct 129 ms 388 KB Output is partially correct
18 Partially correct 122 ms 384 KB Output is partially correct
19 Partially correct 97 ms 424 KB Output is partially correct
20 Partially correct 140 ms 420 KB Output is partially correct
21 Partially correct 104 ms 304 KB Output is partially correct
22 Partially correct 119 ms 376 KB Output is partially correct
23 Correct 63 ms 376 KB Output is correct
24 Correct 68 ms 372 KB Output is correct
25 Correct 52 ms 400 KB Output is correct
26 Correct 45 ms 340 KB Output is correct
27 Correct 86 ms 424 KB Output is correct
28 Correct 79 ms 308 KB Output is correct
29 Correct 105 ms 428 KB Output is correct
30 Correct 71 ms 432 KB Output is correct
31 Partially correct 136 ms 528 KB Output is partially correct
32 Partially correct 167 ms 308 KB Output is partially correct
33 Correct 67 ms 324 KB Output is correct
34 Correct 67 ms 332 KB Output is correct
35 Correct 85 ms 316 KB Output is correct
36 Correct 75 ms 312 KB Output is correct
37 Partially correct 138 ms 408 KB Output is partially correct
38 Partially correct 133 ms 424 KB Output is partially correct
39 Correct 86 ms 528 KB Output is correct
40 Correct 92 ms 324 KB Output is correct
41 Correct 81 ms 428 KB Output is correct
42 Correct 64 ms 416 KB Output is correct
43 Correct 9 ms 312 KB Output is correct
44 Correct 41 ms 288 KB Output is correct
45 Correct 66 ms 404 KB Output is correct
46 Correct 67 ms 376 KB Output is correct
47 Correct 37 ms 384 KB Output is correct
48 Correct 51 ms 376 KB Output is correct