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Submission #1057794

# Submission time Handle Problem Language Result Execution time Memory
1057794 2024-08-14T06:13:14 Z fuad27 Rarest Insects (IOI22_insects) C++17
53.16 / 100
 105 ms 1500 KB 
#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);
				}
			}
			for(int j:er){
				move_outside(j);
				idxs.erase(j);
			}
			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);
			}
		}
		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:61:18: warning: comparison of integer expressions of different signedness: 'std::set<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   61 |   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 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 4 ms 344 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 2 ms 432 KB Output is correct
9 Correct 3 ms 344 KB Output is correct
10 Correct 5 ms 440 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 6 ms 448 KB Output is correct
13 Correct 3 ms 344 KB Output is correct
14 Correct 3 ms 344 KB Output is correct
15 Correct 2 ms 344 KB Output is correct
16 Correct 3 ms 400 KB Output is correct
17 Correct 4 ms 344 KB Output is correct
18 Correct 4 ms 456 KB Output is correct
19 Correct 2 ms 452 KB Output is correct
20 Correct 3 ms 448 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 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 4 ms 344 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 2 ms 432 KB Output is correct
9 Correct 3 ms 344 KB Output is correct
10 Correct 5 ms 440 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 6 ms 448 KB Output is correct
13 Correct 3 ms 344 KB Output is correct
14 Correct 3 ms 344 KB Output is correct
15 Correct 2 ms 344 KB Output is correct
16 Correct 3 ms 400 KB Output is correct
17 Correct 4 ms 344 KB Output is correct
18 Correct 4 ms 456 KB Output is correct
19 Correct 2 ms 452 KB Output is correct
20 Correct 3 ms 448 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 764 KB Output is correct
24 Correct 3 ms 344 KB Output is correct
25 Correct 13 ms 600 KB Output is correct
26 Correct 15 ms 632 KB Output is correct
27 Correct 30 ms 600 KB Output is correct
28 Correct 4 ms 344 KB Output is correct
29 Correct 37 ms 436 KB Output is correct
30 Correct 30 ms 600 KB Output is correct
31 Correct 15 ms 788 KB Output is correct
32 Correct 14 ms 848 KB Output is correct
33 Correct 17 ms 592 KB Output is correct
34 Correct 15 ms 852 KB Output is correct
35 Correct 12 ms 696 KB Output is correct
36 Correct 19 ms 688 KB Output is correct
37 Correct 12 ms 600 KB Output is correct
38 Correct 14 ms 532 KB Output is correct
39 Correct 9 ms 344 KB Output is correct
40 Correct 10 ms 344 KB Output is correct
41 Correct 5 ms 344 KB Output is correct

Subtask #3
28.16 / 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 34 ms 1448 KB Output is correct
8 Correct 7 ms 600 KB Output is correct
9 Correct 23 ms 1168 KB Output is correct
10 Partially correct 37 ms 796 KB Output is partially correct
11 Partially correct 105 ms 344 KB Output is partially correct
12 Correct 11 ms 448 KB Output is correct
13 Partially correct 96 ms 548 KB Output is partially correct
14 Partially correct 57 ms 588 KB Output is partially correct
15 Partially correct 33 ms 1184 KB Output is partially correct
16 Partially correct 31 ms 1200 KB Output is partially correct
17 Partially correct 26 ms 1024 KB Output is partially correct
18 Partially correct 32 ms 864 KB Output is partially correct
19 Partially correct 37 ms 1364 KB Output is partially correct
20 Partially correct 40 ms 1136 KB Output is partially correct
21 Partially correct 30 ms 808 KB Output is partially correct
22 Partially correct 46 ms 672 KB Output is partially correct
23 Partially correct 34 ms 440 KB Output is partially correct
24 Correct 27 ms 1104 KB Output is correct
25 Correct 19 ms 856 KB Output is correct
26 Correct 6 ms 592 KB Output is correct
27 Correct 29 ms 900 KB Output is correct
28 Correct 20 ms 960 KB Output is correct
29 Partially correct 18 ms 1104 KB Output is partially correct
30 Partially correct 25 ms 1060 KB Output is partially correct
31 Partially correct 27 ms 944 KB Output is partially correct
32 Partially correct 36 ms 848 KB Output is partially correct
33 Partially correct 56 ms 736 KB Output is partially correct
34 Partially correct 40 ms 848 KB Output is partially correct
35 Partially correct 21 ms 1108 KB Output is partially correct
36 Partially correct 27 ms 944 KB Output is partially correct
37 Partially correct 31 ms 744 KB Output is partially correct
38 Partially correct 34 ms 848 KB Output is partially correct
39 Correct 38 ms 1180 KB Output is correct
40 Correct 21 ms 848 KB Output is correct
41 Partially correct 31 ms 1104 KB Output is partially correct
42 Partially correct 21 ms 848 KB Output is partially correct
43 Partially correct 12 ms 436 KB Output is partially correct
44 Partially correct 78 ms 788 KB Output is partially correct
45 Correct 25 ms 1500 KB Output is correct
46 Correct 9 ms 600 KB Output is correct
47 Correct 12 ms 592 KB Output is correct
48 Correct 9 ms 600 KB Output is correct