Submission #1057797

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
1057797	2024-08-14T06:14:11 Z	fuad27	Rarest Insects (IOI22_insects)	C++17	93.68 / 100	42 ms	1616 KB

insects

#include "insects.h"
#include <bits/stdc++.h>
using namespace std;
int min_cardinality(int N) {
	int distcnt = 0;
	set<int> idxs;
	for(int i = 0;i<N;i++) {
		move_inside(i);
		if(press_button() <= 1){
			idxs.insert(i);
			distcnt++;
			continue;
		}
		move_outside(i);
	}
	set<int> all_idxs[N+1];
	all_idxs[1] = idxs;
	int ans=1;
	int prev = 1;
	int lo = 2, hi = N/distcnt;
	while(lo <= hi) {
		int mid = (lo+hi)/2;
		if(prev < mid) {
			for(int j = 0;j<N;j++) {
				if(idxs.find(j)!=idxs.end())continue;
				move_inside(j);
				if(press_button() <= mid) {
					idxs.insert(j);
					continue;
				}
				move_outside(j);
			}
		}
		else {
			int cur = 1;
			for(int j = 1;j<mid;j++) {
				if(all_idxs[j].size() > all_idxs[cur].size()) {
					cur=j;
				}
			}
			vector<int> er;
			for(int j:idxs) {
				if(all_idxs[cur].find(j)==all_idxs[cur].end()) {
					er.push_back(j);
				}
			}
			int curn=0;
			for(int j = mid+1;j<N;j++) {
				if(all_idxs[j].size()) {
					cur=j;
					break;
				}
			}
			for(int j:er){
				move_outside(j);
				idxs.erase(j);
			}
			for(int j = 0;j<N;j++) {
				if(idxs.find(j)!=idxs.end())continue;
				if(all_idxs[cur].find(j)==all_idxs[cur].end())continue;
				move_inside(j);
				if(press_button() <= mid) {
					idxs.insert(j);
					continue;
				}
				move_outside(j);
			}
		}
		if(idxs.size() == distcnt*mid) {
			lo = mid+1;
			ans=mid;
		}
		else {
			hi=mid-1;
		}
		all_idxs[mid] = idxs;
		prev=mid;
	}
	return ans;
}

Compilation message

insects.cpp: In function 'int min_cardinality(int)':
insects.cpp:47:8: warning: unused variable 'curn' [-Wunused-variable]
   47 |    int curn=0;
      |        ^~~~
insects.cpp:69:18: warning: comparison of integer expressions of different signedness: 'std::set<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   69 |   if(idxs.size() == distcnt*mid) {
      |      ~~~~~~~~~~~~^~~~~~~~~~~~~~

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	2 ms	344 KB	Output is correct
7	Correct	1 ms	600 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	432 KB	Output is correct
11	Correct	1 ms	344 KB	Output is correct
12	Correct	2 ms	344 KB	Output is correct
13	Correct	2 ms	448 KB	Output is correct
14	Correct	2 ms	452 KB	Output is correct
15	Correct	2 ms	600 KB	Output is correct
16	Correct	3 ms	460 KB	Output is correct
17	Correct	3 ms	344 KB	Output is correct
18	Correct	3 ms	344 KB	Output is correct
19	Correct	2 ms	344 KB	Output is correct
20	Correct	2 ms	456 KB	Output is correct
21	Correct	1 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	2 ms	344 KB	Output is correct
7	Correct	1 ms	600 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	432 KB	Output is correct
11	Correct	1 ms	344 KB	Output is correct
12	Correct	2 ms	344 KB	Output is correct
13	Correct	2 ms	448 KB	Output is correct
14	Correct	2 ms	452 KB	Output is correct
15	Correct	2 ms	600 KB	Output is correct
16	Correct	3 ms	460 KB	Output is correct
17	Correct	3 ms	344 KB	Output is correct
18	Correct	3 ms	344 KB	Output is correct
19	Correct	2 ms	344 KB	Output is correct
20	Correct	2 ms	456 KB	Output is correct
21	Correct	1 ms	344 KB	Output is correct
22	Correct	1 ms	344 KB	Output is correct
23	Correct	15 ms	984 KB	Output is correct
24	Correct	3 ms	344 KB	Output is correct
25	Correct	12 ms	708 KB	Output is correct
26	Correct	11 ms	592 KB	Output is correct
27	Correct	9 ms	344 KB	Output is correct
28	Correct	3 ms	344 KB	Output is correct
29	Correct	11 ms	500 KB	Output is correct
30	Correct	11 ms	344 KB	Output is correct
31	Correct	15 ms	748 KB	Output is correct
32	Correct	13 ms	516 KB	Output is correct
33	Correct	13 ms	556 KB	Output is correct
34	Correct	9 ms	848 KB	Output is correct
35	Correct	15 ms	592 KB	Output is correct
36	Correct	14 ms	692 KB	Output is correct
37	Correct	9 ms	728 KB	Output is correct
38	Correct	12 ms	636 KB	Output is correct
39	Correct	9 ms	600 KB	Output is correct
40	Correct	8 ms	600 KB	Output is correct
41	Correct	4 ms	944 KB	Output is correct

Subtask #3
68.68 / 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	360 KB	Output is correct
6	Correct	1 ms	344 KB	Output is correct
7	Correct	23 ms	1340 KB	Output is correct
8	Correct	8 ms	600 KB	Output is correct
9	Correct	23 ms	888 KB	Output is correct
10	Correct	18 ms	940 KB	Output is correct
11	Correct	28 ms	596 KB	Output is correct
12	Correct	14 ms	600 KB	Output is correct
13	Partially correct	33 ms	592 KB	Output is partially correct
14	Correct	21 ms	592 KB	Output is correct
15	Partially correct	36 ms	1328 KB	Output is partially correct
16	Partially correct	25 ms	1616 KB	Output is partially correct
17	Partially correct	34 ms	1124 KB	Output is partially correct
18	Partially correct	35 ms	1048 KB	Output is partially correct
19	Partially correct	39 ms	1112 KB	Output is partially correct
20	Partially correct	34 ms	1036 KB	Output is partially correct
21	Partially correct	30 ms	848 KB	Output is partially correct
22	Partially correct	42 ms	684 KB	Output is partially correct
23	Correct	22 ms	848 KB	Output is correct
24	Correct	18 ms	592 KB	Output is correct
25	Correct	17 ms	592 KB	Output is correct
26	Correct	8 ms	600 KB	Output is correct
27	Correct	28 ms	1084 KB	Output is correct
28	Correct	16 ms	880 KB	Output is correct
29	Partially correct	21 ms	1500 KB	Output is partially correct
30	Partially correct	20 ms	1300 KB	Output is partially correct
31	Correct	24 ms	620 KB	Output is correct
32	Correct	33 ms	744 KB	Output is correct
33	Correct	25 ms	600 KB	Output is correct
34	Correct	23 ms	724 KB	Output is correct
35	Partially correct	18 ms	848 KB	Output is partially correct
36	Partially correct	20 ms	980 KB	Output is partially correct
37	Correct	27 ms	1560 KB	Output is correct
38	Correct	22 ms	944 KB	Output is correct
39	Correct	21 ms	848 KB	Output is correct
40	Correct	26 ms	688 KB	Output is correct
41	Partially correct	23 ms	868 KB	Output is partially correct
42	Partially correct	24 ms	964 KB	Output is partially correct
43	Correct	5 ms	344 KB	Output is correct
44	Correct	15 ms	536 KB	Output is correct
45	Correct	19 ms	1384 KB	Output is correct
46	Correct	8 ms	600 KB	Output is correct
47	Correct	11 ms	600 KB	Output is correct
48	Correct	11 ms	712 KB	Output is correct

Submission #1057797

Compilation message

Subtask #1 10.0 / 10.0

Subtask #2 15.0 / 15.0

Subtask #3 68.68 / 75.0

Subtask #1
10.0 / 10.0

Subtask #2
15.0 / 15.0

Subtask #3
68.68 / 75.0