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Submission #766377

# Submission time Handle Problem Language Result Execution time Memory
766377 2023-06-25T15:11:11 Z adrilen Rarest Insects (IOI22_insects) C++17
100 / 100
 55 ms 328 KB 
#include "insects.h"
#include<bits/stdc++.h>
using namespace std;
using ll = long long;
typedef pair<int, int> pii;

constexpr int maxn = 2e3 + 9;

bool removed[maxn] = { 0 };

vector <int> in_machine;

mt19937 rng(19812034);

int min_cardinality(int n) {

    vector <int> m(n);
    for (int i = 0; i < n; i++) m[i] = i;
    shuffle(m.begin(), m.end(), rng);

    // Find group

    int i;
    for (int y = 0; y < n; y++)
    {  
        i = m[y];
        move_inside(i);
        if (press_button() > 1) {
            move_outside(i);
        } else {
            in_machine.emplace_back(i);
            removed[i] = true;
        }
    }

    int g = in_machine.size();

    int l = 1, r = n / g;
    int mid;
    while (l < r)
    {
        mid = (l + r + 1 + (r - l > 5)) >> 1;


        vector <int> taken_out, taken_in;

        int i;
        for (int y = 0; y < n; y++)
        {
            i = m[y];
            if (removed[i]) continue;

            move_inside(i);
            if (press_button() > mid) {
                taken_out.emplace_back(i);
                move_outside(i);
            } else {
                taken_in.emplace_back(i);
                in_machine.emplace_back(i);
            }
        }

        
        if ((int)in_machine.size() == mid * g)
        {
            // Mid is lowerbound
            l = mid;

            for (int i : taken_in) removed[i] = true;
        } else {
            r = mid - 1;

            for (int i : taken_out) removed[i] = true;
            for (int i : taken_in) {
                move_outside(i);
                in_machine.pop_back();
            }
        }
    }


    return l;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 208 KB Output is correct
2 Correct 0 ms 208 KB Output is correct
3 Correct 0 ms 208 KB Output is correct
4 Correct 0 ms 208 KB Output is correct
5 Correct 0 ms 208 KB Output is correct
6 Correct 3 ms 208 KB Output is correct
7 Correct 2 ms 208 KB Output is correct
8 Correct 4 ms 208 KB Output is correct
9 Correct 5 ms 208 KB Output is correct
10 Correct 5 ms 208 KB Output is correct
11 Correct 2 ms 208 KB Output is correct
12 Correct 4 ms 208 KB Output is correct
13 Correct 5 ms 208 KB Output is correct
14 Correct 6 ms 208 KB Output is correct
15 Correct 6 ms 308 KB Output is correct
16 Correct 5 ms 308 KB Output is correct
17 Correct 5 ms 208 KB Output is correct
18 Correct 6 ms 208 KB Output is correct
19 Correct 5 ms 312 KB Output is correct
20 Correct 4 ms 308 KB Output is correct
21 Correct 3 ms 308 KB Output is correct
22 Correct 2 ms 208 KB Output is correct

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 208 KB Output is correct
2 Correct 0 ms 208 KB Output is correct
3 Correct 0 ms 208 KB Output is correct
4 Correct 0 ms 208 KB Output is correct
5 Correct 0 ms 208 KB Output is correct
6 Correct 3 ms 208 KB Output is correct
7 Correct 2 ms 208 KB Output is correct
8 Correct 4 ms 208 KB Output is correct
9 Correct 5 ms 208 KB Output is correct
10 Correct 5 ms 208 KB Output is correct
11 Correct 2 ms 208 KB Output is correct
12 Correct 4 ms 208 KB Output is correct
13 Correct 5 ms 208 KB Output is correct
14 Correct 6 ms 208 KB Output is correct
15 Correct 6 ms 308 KB Output is correct
16 Correct 5 ms 308 KB Output is correct
17 Correct 5 ms 208 KB Output is correct
18 Correct 6 ms 208 KB Output is correct
19 Correct 5 ms 312 KB Output is correct
20 Correct 4 ms 308 KB Output is correct
21 Correct 3 ms 308 KB Output is correct
22 Correct 2 ms 208 KB Output is correct
23 Correct 25 ms 308 KB Output is correct
24 Correct 8 ms 312 KB Output is correct
25 Correct 18 ms 208 KB Output is correct
26 Correct 24 ms 208 KB Output is correct
27 Correct 22 ms 208 KB Output is correct
28 Correct 8 ms 316 KB Output is correct
29 Correct 25 ms 308 KB Output is correct
30 Correct 19 ms 208 KB Output is correct
31 Correct 18 ms 300 KB Output is correct
32 Correct 19 ms 316 KB Output is correct
33 Correct 20 ms 312 KB Output is correct
34 Correct 25 ms 208 KB Output is correct
35 Correct 24 ms 208 KB Output is correct
36 Correct 20 ms 312 KB Output is correct
37 Correct 24 ms 300 KB Output is correct
38 Correct 22 ms 308 KB Output is correct
39 Correct 18 ms 208 KB Output is correct
40 Correct 14 ms 316 KB Output is correct
41 Correct 7 ms 208 KB Output is correct

Subtask #3
75.0 / 75.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 208 KB Output is correct
2 Correct 1 ms 208 KB Output is correct
3 Correct 0 ms 208 KB Output is correct
4 Correct 0 ms 208 KB Output is correct
5 Correct 0 ms 208 KB Output is correct
6 Correct 0 ms 208 KB Output is correct
7 Correct 37 ms 308 KB Output is correct
8 Correct 16 ms 320 KB Output is correct
9 Correct 37 ms 312 KB Output is correct
10 Correct 39 ms 208 KB Output is correct
11 Correct 33 ms 308 KB Output is correct
12 Correct 29 ms 208 KB Output is correct
13 Correct 42 ms 308 KB Output is correct
14 Correct 45 ms 304 KB Output is correct
15 Correct 51 ms 300 KB Output is correct
16 Correct 55 ms 300 KB Output is correct
17 Correct 39 ms 324 KB Output is correct
18 Correct 38 ms 308 KB Output is correct
19 Correct 40 ms 308 KB Output is correct
20 Correct 49 ms 304 KB Output is correct
21 Correct 47 ms 208 KB Output is correct
22 Correct 54 ms 296 KB Output is correct
23 Correct 29 ms 304 KB Output is correct
24 Correct 29 ms 208 KB Output is correct
25 Correct 20 ms 312 KB Output is correct
26 Correct 12 ms 320 KB Output is correct
27 Correct 42 ms 328 KB Output is correct
28 Correct 37 ms 208 KB Output is correct
29 Correct 38 ms 316 KB Output is correct
30 Correct 35 ms 308 KB Output is correct
31 Correct 31 ms 312 KB Output is correct
32 Correct 53 ms 320 KB Output is correct
33 Correct 36 ms 292 KB Output is correct
34 Correct 39 ms 312 KB Output is correct
35 Correct 38 ms 308 KB Output is correct
36 Correct 36 ms 296 KB Output is correct
37 Correct 47 ms 208 KB Output is correct
38 Correct 44 ms 292 KB Output is correct
39 Correct 29 ms 308 KB Output is correct
40 Correct 46 ms 308 KB Output is correct
41 Correct 39 ms 304 KB Output is correct
42 Correct 41 ms 304 KB Output is correct
43 Correct 12 ms 208 KB Output is correct
44 Correct 38 ms 312 KB Output is correct
45 Correct 52 ms 296 KB Output is correct
46 Correct 24 ms 324 KB Output is correct
47 Correct 21 ms 312 KB Output is correct
48 Correct 23 ms 320 KB Output is correct