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Submission #1024636

# Submission time Handle Problem Language Result Execution time Memory
1024636 2024-07-16T08:48:01 Z Issa Rarest Insects (IOI22_insects) C++17
93.88 / 100
 48 ms 1096 KB 
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
pair<int, int> pii;

const int maxn = 1e5 + 100;

int n, d;
int used[maxn];
int f[maxn];
int mx[maxn];

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

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

int min_cardinality(int N){
	d = 0; n = N;
	for(int i = N - 1; i >= 0; i--){
		add(i); 
		if(press_button() == 1) f[i] = 1, d++;
		else del(i);
	} clear();
	int ans = n / d, x = 0;
	for(int l = 1, r = n / d - 1; l <= r;){
		int mid = (l + r) >> 1;
		if(x < mid){
			for(int i = 0; i < n; i++){
				if(used[i] || mx[i] > mid) continue;
				add(i);
				if(press_button() > mid){
					mx[i] = mid + 1;
					del(i);
				}
			}
		} else if(x > mid){
			for(int i = n - 1; i >= 0; i--){
				if(!used[i]) continue;
				if(press_button() <= mid) break;
				del(i);
			}
			for(int i = 0; i < n; i++){
				if(used[i] || mx[i] > mid) continue;
				add(i);
				if(press_button() > mid){
					mx[i] = mid + 1;
					del(i);
				}
			}
		} x = mid;
		bool ok = 0;
		for(int i = 0; i < n; i++){
			if(used[i] && f[i]) ok = 1;
		}
		if(!ok) l = mid + 1;
		else r = mid - 1, ans = mid;
	}
	return ans;
}

Subtask #1
10.0 / 10.0

# 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 1 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 444 KB Output is correct
8 Correct 3 ms 344 KB Output is correct
9 Correct 3 ms 344 KB Output is correct
10 Correct 3 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 5 ms 600 KB Output is correct
17 Correct 4 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 3 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 0 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 1 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 444 KB Output is correct
8 Correct 3 ms 344 KB Output is correct
9 Correct 3 ms 344 KB Output is correct
10 Correct 3 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 5 ms 600 KB Output is correct
17 Correct 4 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 3 ms 344 KB Output is correct
22 Correct 1 ms 344 KB Output is correct
23 Correct 16 ms 452 KB Output is correct
24 Correct 5 ms 596 KB Output is correct
25 Correct 13 ms 344 KB Output is correct
26 Correct 24 ms 600 KB Output is correct
27 Correct 8 ms 344 KB Output is correct
28 Correct 5 ms 344 KB Output is correct
29 Correct 19 ms 600 KB Output is correct
30 Correct 16 ms 344 KB Output is correct
31 Correct 15 ms 344 KB Output is correct
32 Correct 20 ms 456 KB Output is correct
33 Correct 22 ms 856 KB Output is correct
34 Correct 11 ms 452 KB Output is correct
35 Correct 20 ms 344 KB Output is correct
36 Correct 24 ms 344 KB Output is correct
37 Correct 23 ms 704 KB Output is correct
38 Correct 12 ms 600 KB Output is correct
39 Correct 14 ms 608 KB Output is correct
40 Correct 7 ms 600 KB Output is correct
41 Correct 5 ms 708 KB Output is correct

Subtask #3
68.88 / 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 44 ms 592 KB Output is correct
8 Correct 16 ms 344 KB Output is correct
9 Partially correct 35 ms 344 KB Output is partially correct
10 Partially correct 42 ms 460 KB Output is partially correct
11 Correct 26 ms 448 KB Output is correct
12 Correct 18 ms 600 KB Output is correct
13 Correct 25 ms 456 KB Output is correct
14 Partially correct 34 ms 452 KB Output is partially correct
15 Partially correct 41 ms 692 KB Output is partially correct
16 Partially correct 38 ms 436 KB Output is partially correct
17 Partially correct 34 ms 444 KB Output is partially correct
18 Partially correct 34 ms 452 KB Output is partially correct
19 Partially correct 34 ms 708 KB Output is partially correct
20 Partially correct 25 ms 456 KB Output is partially correct
21 Partially correct 46 ms 692 KB Output is partially correct
22 Partially correct 41 ms 592 KB Output is partially correct
23 Partially correct 36 ms 344 KB Output is partially correct
24 Correct 36 ms 344 KB Output is correct
25 Correct 29 ms 452 KB Output is correct
26 Correct 14 ms 608 KB Output is correct
27 Partially correct 40 ms 464 KB Output is partially correct
28 Partially correct 35 ms 600 KB Output is partially correct
29 Partially correct 36 ms 600 KB Output is partially correct
30 Partially correct 43 ms 440 KB Output is partially correct
31 Correct 26 ms 592 KB Output is correct
32 Partially correct 42 ms 444 KB Output is partially correct
33 Correct 32 ms 460 KB Output is correct
34 Correct 27 ms 592 KB Output is correct
35 Partially correct 48 ms 944 KB Output is partially correct
36 Partially correct 37 ms 452 KB Output is partially correct
37 Correct 27 ms 344 KB Output is correct
38 Correct 31 ms 444 KB Output is correct
39 Correct 27 ms 596 KB Output is correct
40 Correct 33 ms 688 KB Output is correct
41 Partially correct 33 ms 444 KB Output is partially correct
42 Partially correct 30 ms 592 KB Output is partially correct
43 Correct 7 ms 452 KB Output is correct
44 Correct 32 ms 344 KB Output is correct
45 Correct 25 ms 600 KB Output is correct
46 Correct 20 ms 1096 KB Output is correct
47 Correct 25 ms 452 KB Output is correct
48 Correct 17 ms 344 KB Output is correct