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Submission #974992

# Submission time Handle Problem Language Result Execution time Memory
974992 2024-05-04T09:17:11 Z pirhosig Rarest Insects (IOI22_insects) C++17
99.89 / 100
 38 ms 1656 KB 
#include <bits/stdc++.h>
#include "insects.h"
using namespace std;



int min_cardinality(int N) {
    unordered_set<int> rem;

    for (int i = 0; i < N; ++i) {
        move_inside(i);
        if (press_button() > 1) {
            move_outside(i);
            rem.insert(i);
        }
    }
    int T = N - rem.size();

    int low = 1;
    int upp = N / T;
    while (low < upp) {
        int mid = (low + upp + 1) / 2;
        vector<int> curr;
        for (int a : rem) {
            move_inside(a);
            if (press_button() > mid) move_outside(a);
            else curr.push_back(a);
        }

        if (curr.size() == (mid - low) * T) {
            low = mid;
            for (int a : curr) rem.erase(a);
        }
        else {
            upp = mid - 1;
            rem.clear();
            for (int a : curr) {
                move_outside(a);
                rem.insert(a);
            }
        }
    }

    return low;
}

Compilation message

insects.cpp: In function 'int min_cardinality(int)':
insects.cpp:30:25: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   30 |         if (curr.size() == (mid - low) * T) {
      |             ~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~

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 3 ms 600 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 2 ms 600 KB Output is correct
9 Correct 3 ms 600 KB Output is correct
10 Correct 3 ms 600 KB Output is correct
11 Correct 1 ms 600 KB Output is correct
12 Correct 2 ms 600 KB Output is correct
13 Correct 2 ms 344 KB Output is correct
14 Correct 2 ms 600 KB Output is correct
15 Correct 3 ms 444 KB Output is correct
16 Correct 3 ms 856 KB Output is correct
17 Correct 3 ms 344 KB Output is correct
18 Correct 2 ms 344 KB Output is correct
19 Correct 3 ms 344 KB Output is correct
20 Correct 2 ms 344 KB Output is correct
21 Correct 1 ms 344 KB Output is correct
22 Correct 1 ms 600 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 3 ms 600 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 2 ms 600 KB Output is correct
9 Correct 3 ms 600 KB Output is correct
10 Correct 3 ms 600 KB Output is correct
11 Correct 1 ms 600 KB Output is correct
12 Correct 2 ms 600 KB Output is correct
13 Correct 2 ms 344 KB Output is correct
14 Correct 2 ms 600 KB Output is correct
15 Correct 3 ms 444 KB Output is correct
16 Correct 3 ms 856 KB Output is correct
17 Correct 3 ms 344 KB Output is correct
18 Correct 2 ms 344 KB Output is correct
19 Correct 3 ms 344 KB Output is correct
20 Correct 2 ms 344 KB Output is correct
21 Correct 1 ms 344 KB Output is correct
22 Correct 1 ms 600 KB Output is correct
23 Correct 15 ms 608 KB Output is correct
24 Correct 4 ms 344 KB Output is correct
25 Correct 14 ms 856 KB Output is correct
26 Correct 12 ms 856 KB Output is correct
27 Correct 14 ms 704 KB Output is correct
28 Correct 7 ms 600 KB Output is correct
29 Correct 15 ms 876 KB Output is correct
30 Correct 17 ms 600 KB Output is correct
31 Correct 15 ms 344 KB Output is correct
32 Correct 15 ms 700 KB Output is correct
33 Correct 17 ms 856 KB Output is correct
34 Correct 16 ms 1376 KB Output is correct
35 Correct 16 ms 1124 KB Output is correct
36 Correct 12 ms 856 KB Output is correct
37 Correct 14 ms 876 KB Output is correct
38 Correct 13 ms 960 KB Output is correct
39 Correct 12 ms 860 KB Output is correct
40 Correct 10 ms 856 KB Output is correct
41 Correct 5 ms 692 KB Output is correct

Subtask #3
74.89 / 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 29 ms 988 KB Output is correct
8 Correct 11 ms 344 KB Output is correct
9 Correct 28 ms 1456 KB Output is correct
10 Correct 27 ms 1368 KB Output is correct
11 Correct 25 ms 952 KB Output is correct
12 Correct 18 ms 1112 KB Output is correct
13 Correct 30 ms 876 KB Output is correct
14 Correct 35 ms 1112 KB Output is correct
15 Correct 33 ms 1168 KB Output is correct
16 Correct 35 ms 696 KB Output is correct
17 Correct 35 ms 592 KB Output is correct
18 Correct 38 ms 1460 KB Output is correct
19 Partially correct 28 ms 904 KB Output is partially correct
20 Correct 32 ms 1224 KB Output is correct
21 Correct 27 ms 856 KB Output is correct
22 Correct 34 ms 1364 KB Output is correct
23 Correct 28 ms 908 KB Output is correct
24 Correct 19 ms 1368 KB Output is correct
25 Correct 15 ms 1132 KB Output is correct
26 Correct 8 ms 856 KB Output is correct
27 Correct 29 ms 856 KB Output is correct
28 Correct 34 ms 956 KB Output is correct
29 Partially correct 30 ms 1112 KB Output is partially correct
30 Partially correct 26 ms 1116 KB Output is partially correct
31 Correct 34 ms 968 KB Output is correct
32 Correct 32 ms 856 KB Output is correct
33 Correct 32 ms 1404 KB Output is correct
34 Correct 29 ms 1220 KB Output is correct
35 Partially correct 30 ms 1656 KB Output is partially correct
36 Partially correct 37 ms 996 KB Output is partially correct
37 Correct 24 ms 1244 KB Output is correct
38 Correct 29 ms 920 KB Output is correct
39 Correct 34 ms 1528 KB Output is correct
40 Correct 34 ms 1256 KB Output is correct
41 Partially correct 34 ms 884 KB Output is partially correct
42 Partially correct 31 ms 712 KB Output is partially correct
43 Correct 7 ms 600 KB Output is correct
44 Correct 19 ms 856 KB Output is correct
45 Correct 26 ms 1640 KB Output is correct
46 Correct 14 ms 1136 KB Output is correct
47 Correct 13 ms 688 KB Output is correct
48 Correct 17 ms 716 KB Output is correct