Submission #1077751

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
1077751	2024-08-27T08:53:20 Z	pcc	Rarest Insects (IOI22_insects)	C++17	54.05 / 100	124 ms	1516 KB

insects

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

const int mxn = 2022;
vector<int> v[mxn];
set<int> st;
int N;
int cnt = 0;
const int B = 4;

void del(int k){
	assert(st.find(k) != st.end());
	st.erase(k);
	move_outside(k);
	return;
}

void add(int k){
	assert(st.find(k) == st.end());
	st.insert(k);
	move_inside(k);
	return;
}

int ask(){
	int re = press_button();
	return re;
}

bool check(int lim){
	for(int i = lim+1;i<=N;i++){
		while(!v[i].empty()){
			auto now = v[i].back();
			v[i].pop_back();
			del(now);
		}
	}
	for(int i = 0;i<N;i++){
		if(st.find(i) == st.end()){
			add(i);
			int re = ask();
			if(re>lim)del(i);
			else v[re].push_back(i);
		}
	}
	return lim*cnt == st.size();
}

int min_cardinality(int NN) {
	N = NN;
	check(1);
	cnt = st.size();
	if(N/cnt<=B){
		for(int i = 2;i<=N/cnt;i++){
			if(!check(i))return i-1;
		}
		return N/cnt;
		assert(false);
	}
	int l = 1,r = N/cnt;
	while(l != r){
		int mid = (l+r+1)>>1;
		if(check(mid))l = mid;
		else r = mid-1;
	}
	return l;
}

Compilation message

insects.cpp: In function 'bool check(int)':
insects.cpp:47:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::set<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   47 |  return lim*cnt == st.size();
      |         ~~~~~~~~^~~~~~~~~~~~

Subtask #1
10.0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	344 KB	Output is correct
2	Correct	1 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	1 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	488 KB	Output is correct
9	Correct	4 ms	480 KB	Output is correct
10	Correct	9 ms	344 KB	Output is correct
11	Correct	2 ms	344 KB	Output is correct
12	Correct	7 ms	344 KB	Output is correct
13	Correct	4 ms	344 KB	Output is correct
14	Correct	4 ms	344 KB	Output is correct
15	Correct	2 ms	344 KB	Output is correct
16	Correct	2 ms	344 KB	Output is correct
17	Correct	2 ms	484 KB	Output is correct
18	Correct	5 ms	344 KB	Output is correct
19	Correct	4 ms	344 KB	Output is correct
20	Correct	3 ms	344 KB	Output is correct
21	Correct	2 ms	488 KB	Output is correct
22	Correct	2 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	1 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	1 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	488 KB	Output is correct
9	Correct	4 ms	480 KB	Output is correct
10	Correct	9 ms	344 KB	Output is correct
11	Correct	2 ms	344 KB	Output is correct
12	Correct	7 ms	344 KB	Output is correct
13	Correct	4 ms	344 KB	Output is correct
14	Correct	4 ms	344 KB	Output is correct
15	Correct	2 ms	344 KB	Output is correct
16	Correct	2 ms	344 KB	Output is correct
17	Correct	2 ms	484 KB	Output is correct
18	Correct	5 ms	344 KB	Output is correct
19	Correct	4 ms	344 KB	Output is correct
20	Correct	3 ms	344 KB	Output is correct
21	Correct	2 ms	488 KB	Output is correct
22	Correct	2 ms	344 KB	Output is correct
23	Correct	19 ms	600 KB	Output is correct
24	Correct	4 ms	344 KB	Output is correct
25	Correct	8 ms	484 KB	Output is correct
26	Correct	24 ms	508 KB	Output is correct
27	Correct	58 ms	488 KB	Output is correct
28	Correct	3 ms	344 KB	Output is correct
29	Correct	54 ms	504 KB	Output is correct
30	Correct	38 ms	856 KB	Output is correct
31	Correct	34 ms	504 KB	Output is correct
32	Correct	13 ms	344 KB	Output is correct
33	Correct	14 ms	496 KB	Output is correct
34	Correct	22 ms	856 KB	Output is correct
35	Correct	28 ms	724 KB	Output is correct
36	Correct	17 ms	712 KB	Output is correct
37	Correct	14 ms	344 KB	Output is correct
38	Correct	14 ms	344 KB	Output is correct
39	Correct	10 ms	344 KB	Output is correct
40	Correct	6 ms	344 KB	Output is correct
41	Correct	3 ms	344 KB	Output is correct

Subtask #3
29.05 / 75.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	340 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	33 ms	616 KB	Output is correct
8	Correct	10 ms	600 KB	Output is correct
9	Correct	31 ms	988 KB	Output is correct
10	Partially correct	52 ms	612 KB	Output is partially correct
11	Partially correct	124 ms	476 KB	Output is partially correct
12	Correct	13 ms	504 KB	Output is correct
13	Partially correct	120 ms	344 KB	Output is partially correct
14	Partially correct	80 ms	596 KB	Output is partially correct
15	Partially correct	37 ms	784 KB	Output is partially correct
16	Partially correct	41 ms	1000 KB	Output is partially correct
17	Partially correct	50 ms	772 KB	Output is partially correct
18	Partially correct	34 ms	488 KB	Output is partially correct
19	Partially correct	51 ms	476 KB	Output is partially correct
20	Partially correct	45 ms	756 KB	Output is partially correct
21	Partially correct	47 ms	720 KB	Output is partially correct
22	Partially correct	69 ms	476 KB	Output is partially correct
23	Partially correct	43 ms	592 KB	Output is partially correct
24	Correct	18 ms	848 KB	Output is correct
25	Correct	14 ms	344 KB	Output is correct
26	Correct	9 ms	548 KB	Output is correct
27	Correct	26 ms	540 KB	Output is correct
28	Correct	21 ms	488 KB	Output is correct
29	Partially correct	30 ms	472 KB	Output is partially correct
30	Partially correct	30 ms	592 KB	Output is partially correct
31	Partially correct	45 ms	592 KB	Output is partially correct
32	Partially correct	63 ms	516 KB	Output is partially correct
33	Partially correct	69 ms	592 KB	Output is partially correct
34	Partially correct	42 ms	344 KB	Output is partially correct
35	Partially correct	29 ms	788 KB	Output is partially correct
36	Partially correct	35 ms	592 KB	Output is partially correct
37	Partially correct	55 ms	732 KB	Output is partially correct
38	Partially correct	39 ms	1516 KB	Output is partially correct
39	Correct	26 ms	344 KB	Output is correct
40	Correct	31 ms	736 KB	Output is correct
41	Partially correct	26 ms	516 KB	Output is partially correct
42	Partially correct	24 ms	592 KB	Output is partially correct
43	Partially correct	21 ms	344 KB	Output is partially correct
44	Partially correct	103 ms	592 KB	Output is partially correct
45	Correct	31 ms	740 KB	Output is correct
46	Correct	21 ms	848 KB	Output is correct
47	Correct	21 ms	600 KB	Output is correct
48	Correct	20 ms	600 KB	Output is correct

Submission #1077751

Compilation message

Subtask #1 10.0 / 10.0

Subtask #2 15.0 / 15.0

Subtask #3 29.05 / 75.0

Subtask #1
10.0 / 10.0

Subtask #2
15.0 / 15.0

Subtask #3
29.05 / 75.0