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Submission #1025323

# Submission time Handle Problem Language Result Execution time Memory
1025323 2024-07-16T19:54:55 Z Issa Rarest Insects (IOI22_insects) C++17
100 / 100
 33 ms 596 KB 
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
pair<int, int> pii;

const int maxn = 1e5 + 100;

int n, d, sz;
int used[maxn];
int f[maxn];
int p[maxn];

void move_inside(int i);
void move_outside(int i);
int press_button();

void add(int i){
	sz++;
	used[i] = 1;
	move_inside(i);
}
void del(int i){
	sz--;
	used[i] = 0;
	move_outside(i);
}
void clear(){
	for(int i = 1; i <= n; i++){
		if(used[i]) del(i);
	}
}

bool ok(int k){
	bool res = 0;
	for(int i = 0; i < n; i++){
		if(used[p[i]]) continue;
		add(p[i]);
		if(press_button() > k){
			del(p[i]);
		} else{
			if(sz >= d * k){
				res = 1;
				break;
			}
		}
	}
	if(res){
		for(int i = 0; i < n; i++){
			if(used[p[i]]) used[p[i]] = 2;
		}
	} else{
		for(int i = 0; i < n; i++){
			if(used[p[i]] == 1){
				del(p[i]);
			} else if(used[p[i]] == 0){
				used[p[i]] = 2;
			}
		}
	}
	return res;
}

int min_cardinality(int N){
	d = 0; n = N;
	srand(time(0));
	for(int i = 0; i < n; i++){
		p[i] = i;
	}
	random_shuffle(p, p + n);
	for(int i = N - 1; i >= 0; i--){
		add(p[i]);
		if(press_button() == 1) d++;
		else del(p[i]);
	} clear();
	int ans = 1;
	for(int l = 2, r = n / d; l <= r;){
		int mid = (l + r) >> 1;
		if(!ok(mid)) r = mid - 1;
		else l = mid + 1, ans = mid;
	}
	return ans;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 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 3 ms 344 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 2 ms 344 KB Output is correct
9 Correct 2 ms 344 KB Output is correct
10 Correct 4 ms 344 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 3 ms 344 KB Output is correct
13 Correct 3 ms 344 KB Output is correct
14 Correct 3 ms 344 KB Output is correct
15 Correct 3 ms 344 KB Output is correct
16 Correct 3 ms 344 KB Output is correct
17 Correct 3 ms 344 KB Output is correct
18 Correct 4 ms 344 KB Output is correct
19 Correct 3 ms 344 KB Output is correct
20 Correct 3 ms 344 KB Output is correct
21 Correct 2 ms 344 KB Output is correct
22 Correct 1 ms 344 KB Output is correct

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 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 3 ms 344 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 2 ms 344 KB Output is correct
9 Correct 2 ms 344 KB Output is correct
10 Correct 4 ms 344 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 3 ms 344 KB Output is correct
13 Correct 3 ms 344 KB Output is correct
14 Correct 3 ms 344 KB Output is correct
15 Correct 3 ms 344 KB Output is correct
16 Correct 3 ms 344 KB Output is correct
17 Correct 3 ms 344 KB Output is correct
18 Correct 4 ms 344 KB Output is correct
19 Correct 3 ms 344 KB Output is correct
20 Correct 3 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 8 ms 344 KB Output is correct
24 Correct 5 ms 344 KB Output is correct
25 Correct 8 ms 344 KB Output is correct
26 Correct 20 ms 344 KB Output is correct
27 Correct 12 ms 344 KB Output is correct
28 Correct 5 ms 344 KB Output is correct
29 Correct 13 ms 344 KB Output is correct
30 Correct 18 ms 344 KB Output is correct
31 Correct 13 ms 344 KB Output is correct
32 Correct 8 ms 344 KB Output is correct
33 Correct 13 ms 344 KB Output is correct
34 Correct 9 ms 344 KB Output is correct
35 Correct 9 ms 344 KB Output is correct
36 Correct 18 ms 344 KB Output is correct
37 Correct 25 ms 344 KB Output is correct
38 Correct 13 ms 344 KB Output is correct
39 Correct 17 ms 592 KB Output is correct
40 Correct 8 ms 344 KB Output is correct
41 Correct 3 ms 344 KB Output is correct

Subtask #3
75.0 / 75.0

# 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 344 KB Output is correct
7 Correct 23 ms 344 KB Output is correct
8 Correct 6 ms 596 KB Output is correct
9 Correct 18 ms 344 KB Output is correct
10 Correct 27 ms 344 KB Output is correct
11 Correct 20 ms 444 KB Output is correct
12 Correct 30 ms 592 KB Output is correct
13 Correct 33 ms 344 KB Output is correct
14 Correct 32 ms 444 KB Output is correct
15 Correct 29 ms 344 KB Output is correct
16 Correct 23 ms 344 KB Output is correct
17 Correct 16 ms 344 KB Output is correct
18 Correct 22 ms 344 KB Output is correct
19 Correct 28 ms 344 KB Output is correct
20 Correct 22 ms 344 KB Output is correct
21 Correct 28 ms 592 KB Output is correct
22 Correct 30 ms 440 KB Output is correct
23 Correct 33 ms 456 KB Output is correct
24 Correct 23 ms 340 KB Output is correct
25 Correct 22 ms 444 KB Output is correct
26 Correct 10 ms 344 KB Output is correct
27 Correct 28 ms 344 KB Output is correct
28 Correct 17 ms 344 KB Output is correct
29 Correct 18 ms 344 KB Output is correct
30 Correct 21 ms 344 KB Output is correct
31 Correct 31 ms 344 KB Output is correct
32 Correct 25 ms 344 KB Output is correct
33 Correct 27 ms 444 KB Output is correct
34 Correct 19 ms 344 KB Output is correct
35 Correct 26 ms 344 KB Output is correct
36 Correct 23 ms 344 KB Output is correct
37 Correct 19 ms 344 KB Output is correct
38 Correct 25 ms 344 KB Output is correct
39 Correct 22 ms 344 KB Output is correct
40 Correct 18 ms 344 KB Output is correct
41 Correct 26 ms 344 KB Output is correct
42 Correct 31 ms 344 KB Output is correct
43 Correct 4 ms 344 KB Output is correct
44 Correct 18 ms 344 KB Output is correct
45 Correct 22 ms 344 KB Output is correct
46 Correct 16 ms 472 KB Output is correct
47 Correct 19 ms 344 KB Output is correct
48 Correct 17 ms 464 KB Output is correct