oj.uz

Submission #826350

# Submission time Handle Problem Language Result Execution time Memory
826350 2023-08-15T13:20:44 Z LittleCube Rarest Insects (IOI22_insects) C++17
100 / 100
 50 ms 408 KB 
#include "insects.h"
#include <bits/stdc++.h>
#define ll long long
using namespace std;

const double r = 0.45;

int min_cardinality(int N)
{
    vector<int> remain;
    int g = 0;
    {
        vector<int> single;
        for (int i = 0; i < N; i++)
        {
            move_inside(i);
            if (press_button() == 2)
                move_outside(i);
            else
                single.emplace_back(i), g++;
        }
        for (int i : single)
            move_outside(i);
    }
    int L = 1, R = N / g;
    for (int i = 0; i < N; i++)
        remain.emplace_back(i);
    int lazy = 0;
    while (L < R)
    {
        mt19937 rd(chrono::steady_clock::now().time_since_epoch().count());
        shuffle(remain.begin(), remain.end(), rd);
        int k = L * (1.0 - r) + R * r;
        vector<int> small, large;

        for (int i : remain)
        {
            if (small.size() + lazy == g * (k + 1))
            {
                large.emplace_back(i);
                continue;
            }
            move_inside(i);
            if (press_button() > k + 1)
            {
                move_outside(i);
                large.emplace_back(i);
            }
            else
                small.emplace_back(i);
        }
        if (small.size() + lazy == g * (k + 1))
            L = k + 1, remain = large, lazy = g * (k + 1);
        else
        {
            for (int i : small)
                move_outside(i);
            R = k, remain = small;
        }
    }
    return L;
}

Compilation message

insects.cpp: In function 'int min_cardinality(int)':
insects.cpp:38:37: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   38 |             if (small.size() + lazy == g * (k + 1))
      |                 ~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~
insects.cpp:52:33: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   52 |         if (small.size() + lazy == g * (k + 1))
      |             ~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~

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 1 ms 208 KB Output is correct
4 Correct 1 ms 208 KB Output is correct
5 Correct 1 ms 208 KB Output is correct
6 Correct 2 ms 208 KB Output is correct
7 Correct 1 ms 208 KB Output is correct
8 Correct 4 ms 300 KB Output is correct
9 Correct 5 ms 208 KB Output is correct
10 Correct 4 ms 208 KB Output is correct
11 Correct 3 ms 304 KB Output is correct
12 Correct 5 ms 208 KB Output is correct
13 Correct 5 ms 208 KB Output is correct
14 Correct 5 ms 208 KB Output is correct
15 Correct 5 ms 208 KB Output is correct
16 Correct 5 ms 304 KB Output is correct
17 Correct 5 ms 208 KB Output is correct
18 Correct 6 ms 208 KB Output is correct
19 Correct 3 ms 208 KB Output is correct
20 Correct 6 ms 208 KB Output is correct
21 Correct 3 ms 208 KB Output is correct
22 Correct 1 ms 300 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 1 ms 208 KB Output is correct
4 Correct 1 ms 208 KB Output is correct
5 Correct 1 ms 208 KB Output is correct
6 Correct 2 ms 208 KB Output is correct
7 Correct 1 ms 208 KB Output is correct
8 Correct 4 ms 300 KB Output is correct
9 Correct 5 ms 208 KB Output is correct
10 Correct 4 ms 208 KB Output is correct
11 Correct 3 ms 304 KB Output is correct
12 Correct 5 ms 208 KB Output is correct
13 Correct 5 ms 208 KB Output is correct
14 Correct 5 ms 208 KB Output is correct
15 Correct 5 ms 208 KB Output is correct
16 Correct 5 ms 304 KB Output is correct
17 Correct 5 ms 208 KB Output is correct
18 Correct 6 ms 208 KB Output is correct
19 Correct 3 ms 208 KB Output is correct
20 Correct 6 ms 208 KB Output is correct
21 Correct 3 ms 208 KB Output is correct
22 Correct 1 ms 300 KB Output is correct
23 Correct 10 ms 316 KB Output is correct
24 Correct 9 ms 208 KB Output is correct
25 Correct 22 ms 296 KB Output is correct
26 Correct 22 ms 296 KB Output is correct
27 Correct 16 ms 304 KB Output is correct
28 Correct 9 ms 208 KB Output is correct
29 Correct 17 ms 208 KB Output is correct
30 Correct 18 ms 208 KB Output is correct
31 Correct 13 ms 304 KB Output is correct
32 Correct 19 ms 304 KB Output is correct
33 Correct 22 ms 300 KB Output is correct
34 Correct 20 ms 208 KB Output is correct
35 Correct 16 ms 300 KB Output is correct
36 Correct 21 ms 296 KB Output is correct
37 Correct 23 ms 208 KB Output is correct
38 Correct 23 ms 304 KB Output is correct
39 Correct 21 ms 208 KB Output is correct
40 Correct 19 ms 296 KB Output is correct
41 Correct 6 ms 304 KB Output is correct

Subtask #3
75.0 / 75.0

# Verdict Execution time Memory Grader output
1 Correct 1 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 1 ms 208 KB Output is correct
7 Correct 31 ms 292 KB Output is correct
8 Correct 16 ms 300 KB Output is correct
9 Correct 35 ms 296 KB Output is correct
10 Correct 30 ms 300 KB Output is correct
11 Correct 31 ms 292 KB Output is correct
12 Correct 36 ms 300 KB Output is correct
13 Correct 36 ms 208 KB Output is correct
14 Correct 25 ms 292 KB Output is correct
15 Correct 26 ms 296 KB Output is correct
16 Correct 36 ms 284 KB Output is correct
17 Correct 40 ms 208 KB Output is correct
18 Correct 31 ms 208 KB Output is correct
19 Correct 18 ms 304 KB Output is correct
20 Correct 35 ms 296 KB Output is correct
21 Correct 33 ms 300 KB Output is correct
22 Correct 50 ms 296 KB Output is correct
23 Correct 33 ms 288 KB Output is correct
24 Correct 26 ms 308 KB Output is correct
25 Correct 33 ms 300 KB Output is correct
26 Correct 15 ms 328 KB Output is correct
27 Correct 29 ms 280 KB Output is correct
28 Correct 39 ms 300 KB Output is correct
29 Correct 32 ms 208 KB Output is correct
30 Correct 32 ms 296 KB Output is correct
31 Correct 30 ms 296 KB Output is correct
32 Correct 47 ms 284 KB Output is correct
33 Correct 37 ms 284 KB Output is correct
34 Correct 39 ms 308 KB Output is correct
35 Correct 35 ms 408 KB Output is correct
36 Correct 36 ms 280 KB Output is correct
37 Correct 48 ms 304 KB Output is correct
38 Correct 34 ms 296 KB Output is correct
39 Correct 42 ms 296 KB Output is correct
40 Correct 22 ms 280 KB Output is correct
41 Correct 31 ms 300 KB Output is correct
42 Correct 37 ms 292 KB Output is correct
43 Correct 9 ms 312 KB Output is correct
44 Correct 29 ms 296 KB Output is correct
45 Correct 14 ms 296 KB Output is correct
46 Correct 27 ms 300 KB Output is correct
47 Correct 24 ms 308 KB Output is correct
48 Correct 23 ms 300 KB Output is correct