답안 #942190

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
942190	2024-03-10T10:39:47 Z	benjaminkleyn	드문 곤충 (IOI22_insects)	C++17	99.95 / 100	48 ms	1360 KB

insects

#include <bits/stdc++.h>
#include "insects.h"
using namespace std;

int cnt;
bool inside[2000];
bool bad[2000];

void init()
{
    cnt = 0;
    memset(inside, false, sizeof(inside));
    memset(bad, false, sizeof(bad));
}
void move_in(int i)
{
    if (inside[i])
        return;
    cnt++;
    inside[i] = true;
    move_inside(i);
}
void move_out(int i)
{
    if (!inside[i])
        return;
    cnt--;
    inside[i] = false;
    move_outside(i);
}

int min_cardinality(int N) 
{
    init();
    for (int i = 0; i < N; i++)
    {
        move_in(i);
        if (press_button() > 1)
            move_out(i);
    }
    int num_types = cnt;

    if (num_types == 1)
        return N;
    if (num_types == N)
        return 1;

    mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
    vector<int> p(N);
    iota(p.begin(), p.end(), 0);

    int lo = 1, hi = N / cnt, mid, ans;
    while (lo <= hi)
    {
        mid = (lo + hi) / 2;

        shuffle(p.begin(), p.end(), rng);

        vector<int> new_insects;
        vector<int> bad_insects;
        for (int i = 0; i < N; i++)
        {
            if (!(bad[i] || inside[i]))
            {
                move_in(i);

                if (press_button() > mid)
                {
                    bad_insects.push_back(i);
                    move_out(i);
                }
                else
                    new_insects.push_back(i);

                if (cnt >= mid * num_types)
                    break;
            }
        }

        if (cnt == mid * num_types)
            ans = mid, lo = mid + 1;
        else
        {
            for (int i : bad_insects)
                bad[i] = true;
            for (int i : new_insects)
                move_out(i);
            hi = mid - 1;
        }
    }
    return ans;
}

Compilation message

insects.cpp: In function 'int min_cardinality(int)':
insects.cpp:52:36: warning: 'ans' may be used uninitialized in this function [-Wmaybe-uninitialized]
   52 |     int lo = 1, hi = N / cnt, mid, ans;
      |                                    ^~~

Subtask #1
10.0 / 10.0

#	결과	실행 시간	메모리	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	1 ms	344 KB	Output is correct
8	Correct	2 ms	344 KB	Output is correct
9	Correct	2 ms	600 KB	Output is correct
10	Correct	2 ms	448 KB	Output is correct
11	Correct	1 ms	344 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	4 ms	444 KB	Output is correct
16	Correct	2 ms	600 KB	Output is correct
17	Correct	2 ms	600 KB	Output is correct
18	Correct	2 ms	344 KB	Output is correct
19	Correct	2 ms	344 KB	Output is correct
20	Correct	2 ms	444 KB	Output is correct
21	Correct	1 ms	344 KB	Output is correct
22	Correct	1 ms	344 KB	Output is correct

Subtask #2
15.0 / 15.0

#	결과	실행 시간	메모리	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	1 ms	344 KB	Output is correct
8	Correct	2 ms	344 KB	Output is correct
9	Correct	2 ms	600 KB	Output is correct
10	Correct	2 ms	448 KB	Output is correct
11	Correct	1 ms	344 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	4 ms	444 KB	Output is correct
16	Correct	2 ms	600 KB	Output is correct
17	Correct	2 ms	600 KB	Output is correct
18	Correct	2 ms	344 KB	Output is correct
19	Correct	2 ms	344 KB	Output is correct
20	Correct	2 ms	444 KB	Output is correct
21	Correct	1 ms	344 KB	Output is correct
22	Correct	1 ms	344 KB	Output is correct
23	Correct	5 ms	344 KB	Output is correct
24	Correct	4 ms	344 KB	Output is correct
25	Correct	10 ms	600 KB	Output is correct
26	Correct	12 ms	452 KB	Output is correct
27	Correct	12 ms	1112 KB	Output is correct
28	Correct	4 ms	600 KB	Output is correct
29	Correct	10 ms	1112 KB	Output is correct
30	Correct	14 ms	688 KB	Output is correct
31	Correct	12 ms	600 KB	Output is correct
32	Correct	10 ms	600 KB	Output is correct
33	Correct	16 ms	600 KB	Output is correct
34	Correct	12 ms	600 KB	Output is correct
35	Correct	12 ms	444 KB	Output is correct
36	Correct	13 ms	600 KB	Output is correct
37	Correct	12 ms	676 KB	Output is correct
38	Correct	18 ms	848 KB	Output is correct
39	Correct	11 ms	444 KB	Output is correct
40	Correct	8 ms	700 KB	Output is correct
41	Correct	4 ms	600 KB	Output is correct

Subtask #3
74.95 / 75.0

#	결과	실행 시간	메모리	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	1 ms	340 KB	Output is correct
6	Correct	0 ms	344 KB	Output is correct
7	Correct	12 ms	344 KB	Output is correct
8	Correct	9 ms	344 KB	Output is correct
9	Correct	22 ms	848 KB	Output is correct
10	Correct	26 ms	1360 KB	Output is correct
11	Correct	30 ms	432 KB	Output is correct
12	Correct	13 ms	444 KB	Output is correct
13	Correct	29 ms	848 KB	Output is correct
14	Correct	27 ms	604 KB	Output is correct
15	Correct	27 ms	344 KB	Output is correct
16	Correct	22 ms	1100 KB	Output is correct
17	Correct	24 ms	436 KB	Output is correct
18	Correct	29 ms	600 KB	Output is correct
19	Correct	26 ms	676 KB	Output is correct
20	Correct	20 ms	592 KB	Output is correct
21	Correct	27 ms	684 KB	Output is correct
22	Correct	40 ms	852 KB	Output is correct
23	Correct	23 ms	700 KB	Output is correct
24	Correct	14 ms	848 KB	Output is correct
25	Correct	20 ms	444 KB	Output is correct
26	Correct	8 ms	592 KB	Output is correct
27	Correct	20 ms	600 KB	Output is correct
28	Correct	17 ms	444 KB	Output is correct
29	Correct	27 ms	432 KB	Output is correct
30	Correct	30 ms	688 KB	Output is correct
31	Correct	32 ms	440 KB	Output is correct
32	Correct	48 ms	432 KB	Output is correct
33	Correct	22 ms	1104 KB	Output is correct
34	Correct	21 ms	848 KB	Output is correct
35	Partially correct	27 ms	608 KB	Output is partially correct
36	Correct	28 ms	436 KB	Output is correct
37	Correct	24 ms	428 KB	Output is correct
38	Correct	30 ms	600 KB	Output is correct
39	Correct	25 ms	676 KB	Output is correct
40	Correct	19 ms	432 KB	Output is correct
41	Correct	27 ms	436 KB	Output is correct
42	Partially correct	34 ms	600 KB	Output is partially correct
43	Correct	6 ms	600 KB	Output is correct
44	Correct	23 ms	672 KB	Output is correct
45	Correct	21 ms	936 KB	Output is correct
46	Correct	17 ms	680 KB	Output is correct
47	Correct	14 ms	676 KB	Output is correct
48	Correct	14 ms	696 KB	Output is correct

답안 #942190

Compilation message

Subtask #1 10.0 / 10.0

Subtask #2 15.0 / 15.0

Subtask #3 74.95 / 75.0

Subtask #1
10.0 / 10.0

Subtask #2
15.0 / 15.0

Subtask #3
74.95 / 75.0