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Submission #975010

# Submission time Handle Problem Language Result Execution time Memory
975010 2024-05-04T09:40:00 Z pirhosig Rarest Insects (IOI22_insects) C++17
100 / 100
 35 ms 1628 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;
        int cnt = 0;
        for (int a : rem) {
            cnt++;
            move_inside(a);
            if (press_button() > mid) move_outside(a);
            else curr.push_back(a);

            if (curr.size() == (mid - low) * T) break;
        }
    
        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:31:29: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   31 |             if (curr.size() == (mid - low) * T) break;
      |                 ~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~
insects.cpp:34:25: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   34 |         if (curr.size() == (mid - low) * T) {
      |             ~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~

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 0 ms 344 KB Output is correct
6 Correct 2 ms 344 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 3 ms 668 KB Output is correct
9 Correct 3 ms 344 KB Output is correct
10 Correct 2 ms 600 KB Output is correct
11 Correct 1 ms 592 KB Output is correct
12 Correct 3 ms 600 KB Output is correct
13 Correct 2 ms 600 KB Output is correct
14 Correct 3 ms 600 KB Output is correct
15 Correct 4 ms 604 KB Output is correct
16 Correct 3 ms 856 KB Output is correct
17 Correct 3 ms 600 KB Output is correct
18 Correct 4 ms 600 KB Output is correct
19 Correct 2 ms 600 KB Output is correct
20 Correct 2 ms 604 KB Output is correct
21 Correct 2 ms 600 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 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 0 ms 344 KB Output is correct
6 Correct 2 ms 344 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 3 ms 668 KB Output is correct
9 Correct 3 ms 344 KB Output is correct
10 Correct 2 ms 600 KB Output is correct
11 Correct 1 ms 592 KB Output is correct
12 Correct 3 ms 600 KB Output is correct
13 Correct 2 ms 600 KB Output is correct
14 Correct 3 ms 600 KB Output is correct
15 Correct 4 ms 604 KB Output is correct
16 Correct 3 ms 856 KB Output is correct
17 Correct 3 ms 600 KB Output is correct
18 Correct 4 ms 600 KB Output is correct
19 Correct 2 ms 600 KB Output is correct
20 Correct 2 ms 604 KB Output is correct
21 Correct 2 ms 600 KB Output is correct
22 Correct 1 ms 600 KB Output is correct
23 Correct 9 ms 856 KB Output is correct
24 Correct 5 ms 344 KB Output is correct
25 Correct 12 ms 344 KB Output is correct
26 Correct 14 ms 468 KB Output is correct
27 Correct 12 ms 1144 KB Output is correct
28 Correct 4 ms 600 KB Output is correct
29 Correct 11 ms 724 KB Output is correct
30 Correct 14 ms 472 KB Output is correct
31 Correct 9 ms 856 KB Output is correct
32 Correct 10 ms 856 KB Output is correct
33 Correct 15 ms 856 KB Output is correct
34 Correct 9 ms 1112 KB Output is correct
35 Correct 13 ms 596 KB Output is correct
36 Correct 15 ms 600 KB Output is correct
37 Correct 19 ms 856 KB Output is correct
38 Correct 11 ms 1368 KB Output is correct
39 Correct 12 ms 1208 KB Output is correct
40 Correct 9 ms 596 KB Output is correct
41 Correct 4 ms 856 KB Output is correct

Subtask #3
75.0 / 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 1 ms 344 KB Output is correct
7 Correct 25 ms 1168 KB Output is correct
8 Correct 9 ms 344 KB Output is correct
9 Correct 21 ms 856 KB Output is correct
10 Correct 25 ms 1112 KB Output is correct
11 Correct 24 ms 1136 KB Output is correct
12 Correct 17 ms 600 KB Output is correct
13 Correct 33 ms 1492 KB Output is correct
14 Correct 28 ms 1224 KB Output is correct
15 Correct 20 ms 1208 KB Output is correct
16 Correct 20 ms 1244 KB Output is correct
17 Correct 20 ms 1628 KB Output is correct
18 Correct 26 ms 972 KB Output is correct
19 Correct 24 ms 1252 KB Output is correct
20 Correct 33 ms 1116 KB Output is correct
21 Correct 32 ms 1116 KB Output is correct
22 Correct 31 ms 960 KB Output is correct
23 Correct 23 ms 1628 KB Output is correct
24 Correct 25 ms 968 KB Output is correct
25 Correct 14 ms 1384 KB Output is correct
26 Correct 8 ms 344 KB Output is correct
27 Correct 23 ms 1208 KB Output is correct
28 Correct 20 ms 1144 KB Output is correct
29 Correct 19 ms 1264 KB Output is correct
30 Correct 24 ms 1148 KB Output is correct
31 Correct 21 ms 856 KB Output is correct
32 Correct 22 ms 1112 KB Output is correct
33 Correct 26 ms 1384 KB Output is correct
34 Correct 29 ms 724 KB Output is correct
35 Correct 18 ms 1144 KB Output is correct
36 Correct 35 ms 600 KB Output is correct
37 Correct 23 ms 1136 KB Output is correct
38 Correct 29 ms 1396 KB Output is correct
39 Correct 15 ms 628 KB Output is correct
40 Correct 20 ms 1128 KB Output is correct
41 Correct 24 ms 600 KB Output is correct
42 Correct 22 ms 1496 KB Output is correct
43 Correct 6 ms 344 KB Output is correct
44 Correct 23 ms 1368 KB Output is correct
45 Correct 20 ms 1232 KB Output is correct
46 Correct 12 ms 956 KB Output is correct
47 Correct 14 ms 712 KB Output is correct
48 Correct 13 ms 692 KB Output is correct