답안 #1114163

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1114163	2024-11-18T09:03:42 Z	borisAngelov	Group Photo (JOI21_ho_t3)	C++17	100 / 100	323 ms	832 KB

Main

#include <bits/stdc++.h>

using namespace std;

const int maxn = 5005;
const int inf = 1e9;

int n;
int a[maxn], positions[maxn], toRem[maxn];

int dp[maxn];

struct FenwickTree
{
    int tree[maxn];

    void reset(int MAX)
    {
        fill(tree, tree + MAX + 1, 0);
    }

    void update(int pos, int val)
    {
        for (; pos <= n; pos += (pos & (-pos)))
        {
            tree[pos] += val;
        }
    }

    int query(int pos)
    {
        int result = 0;

        for (; pos >= 1; pos -= (pos & (-pos)))
        {
            result += tree[pos];
        }

        return result;
    }
};

FenwickTree treeActive;
FenwickTree treeSmaller;

void fastIO()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
}

int main()
{
    fastIO();

    cin >> n;

    for (int i = 1; i <= n; ++i)
    {
        cin >> a[i];
        positions[a[i]] = i;
    }

    dp[n + 1] = 0;

    for (int num = n; num >= 1; --num)
    {
        dp[num] = inf;

        treeActive.update(positions[num], +1);
        treeSmaller.reset(n);

        int cost = 0;

        for (int to = num; to <= n; ++to)
        {
            cost += treeActive.query(positions[to]) - 1;
            treeSmaller.update(positions[to], +1);
            cost -= treeSmaller.query(n) - treeSmaller.query(positions[to]);
            dp[num] = min(dp[num], cost + dp[to + 1]);
        }
    }

    cout << dp[1] << endl;

    return 0;
}

Subtask #1
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	336 KB	Output is correct
2	Correct	1 ms	504 KB	Output is correct
3	Correct	1 ms	504 KB	Output is correct
4	Correct	1 ms	336 KB	Output is correct
5	Correct	1 ms	336 KB	Output is correct
6	Correct	1 ms	336 KB	Output is correct
7	Correct	1 ms	336 KB	Output is correct
8	Correct	1 ms	592 KB	Output is correct
9	Correct	1 ms	336 KB	Output is correct
10	Correct	1 ms	504 KB	Output is correct

Subtask #2
7.0 / 7.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	336 KB	Output is correct
2	Correct	1 ms	504 KB	Output is correct
3	Correct	1 ms	504 KB	Output is correct
4	Correct	1 ms	336 KB	Output is correct
5	Correct	1 ms	336 KB	Output is correct
6	Correct	1 ms	336 KB	Output is correct
7	Correct	1 ms	336 KB	Output is correct
8	Correct	1 ms	592 KB	Output is correct
9	Correct	1 ms	336 KB	Output is correct
10	Correct	1 ms	504 KB	Output is correct
11	Correct	1 ms	636 KB	Output is correct
12	Correct	1 ms	336 KB	Output is correct
13	Correct	1 ms	336 KB	Output is correct
14	Correct	2 ms	336 KB	Output is correct
15	Correct	1 ms	336 KB	Output is correct
16	Correct	1 ms	336 KB	Output is correct
17	Correct	1 ms	640 KB	Output is correct
18	Correct	1 ms	504 KB	Output is correct
19	Correct	1 ms	336 KB	Output is correct
20	Correct	1 ms	504 KB	Output is correct

Subtask #3
32.0 / 32.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	336 KB	Output is correct
2	Correct	1 ms	504 KB	Output is correct
3	Correct	1 ms	504 KB	Output is correct
4	Correct	1 ms	336 KB	Output is correct
5	Correct	1 ms	336 KB	Output is correct
6	Correct	1 ms	336 KB	Output is correct
7	Correct	1 ms	336 KB	Output is correct
8	Correct	1 ms	592 KB	Output is correct
9	Correct	1 ms	336 KB	Output is correct
10	Correct	1 ms	504 KB	Output is correct
11	Correct	1 ms	636 KB	Output is correct
12	Correct	1 ms	336 KB	Output is correct
13	Correct	1 ms	336 KB	Output is correct
14	Correct	2 ms	336 KB	Output is correct
15	Correct	1 ms	336 KB	Output is correct
16	Correct	1 ms	336 KB	Output is correct
17	Correct	1 ms	640 KB	Output is correct
18	Correct	1 ms	504 KB	Output is correct
19	Correct	1 ms	336 KB	Output is correct
20	Correct	1 ms	504 KB	Output is correct
21	Correct	2 ms	336 KB	Output is correct
22	Correct	2 ms	336 KB	Output is correct
23	Correct	2 ms	336 KB	Output is correct
24	Correct	1 ms	336 KB	Output is correct
25	Correct	2 ms	336 KB	Output is correct
26	Correct	1 ms	588 KB	Output is correct
27	Correct	2 ms	336 KB	Output is correct
28	Correct	1 ms	336 KB	Output is correct
29	Correct	2 ms	336 KB	Output is correct
30	Correct	1 ms	336 KB	Output is correct

Subtask #4
20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	336 KB	Output is correct
2	Correct	1 ms	504 KB	Output is correct
3	Correct	1 ms	504 KB	Output is correct
4	Correct	1 ms	336 KB	Output is correct
5	Correct	1 ms	336 KB	Output is correct
6	Correct	1 ms	336 KB	Output is correct
7	Correct	1 ms	336 KB	Output is correct
8	Correct	1 ms	592 KB	Output is correct
9	Correct	1 ms	336 KB	Output is correct
10	Correct	1 ms	504 KB	Output is correct
11	Correct	1 ms	636 KB	Output is correct
12	Correct	1 ms	336 KB	Output is correct
13	Correct	1 ms	336 KB	Output is correct
14	Correct	2 ms	336 KB	Output is correct
15	Correct	1 ms	336 KB	Output is correct
16	Correct	1 ms	336 KB	Output is correct
17	Correct	1 ms	640 KB	Output is correct
18	Correct	1 ms	504 KB	Output is correct
19	Correct	1 ms	336 KB	Output is correct
20	Correct	1 ms	504 KB	Output is correct
21	Correct	2 ms	336 KB	Output is correct
22	Correct	2 ms	336 KB	Output is correct
23	Correct	2 ms	336 KB	Output is correct
24	Correct	1 ms	336 KB	Output is correct
25	Correct	2 ms	336 KB	Output is correct
26	Correct	1 ms	588 KB	Output is correct
27	Correct	2 ms	336 KB	Output is correct
28	Correct	1 ms	336 KB	Output is correct
29	Correct	2 ms	336 KB	Output is correct
30	Correct	1 ms	336 KB	Output is correct
31	Correct	8 ms	336 KB	Output is correct
32	Correct	6 ms	336 KB	Output is correct
33	Correct	6 ms	336 KB	Output is correct
34	Correct	5 ms	336 KB	Output is correct
35	Correct	6 ms	336 KB	Output is correct
36	Correct	7 ms	336 KB	Output is correct
37	Correct	5 ms	336 KB	Output is correct
38	Correct	6 ms	336 KB	Output is correct
39	Correct	5 ms	588 KB	Output is correct
40	Correct	5 ms	504 KB	Output is correct

Subtask #5
36.0 / 36.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	336 KB	Output is correct
2	Correct	1 ms	504 KB	Output is correct
3	Correct	1 ms	504 KB	Output is correct
4	Correct	1 ms	336 KB	Output is correct
5	Correct	1 ms	336 KB	Output is correct
6	Correct	1 ms	336 KB	Output is correct
7	Correct	1 ms	336 KB	Output is correct
8	Correct	1 ms	592 KB	Output is correct
9	Correct	1 ms	336 KB	Output is correct
10	Correct	1 ms	504 KB	Output is correct
11	Correct	1 ms	636 KB	Output is correct
12	Correct	1 ms	336 KB	Output is correct
13	Correct	1 ms	336 KB	Output is correct
14	Correct	2 ms	336 KB	Output is correct
15	Correct	1 ms	336 KB	Output is correct
16	Correct	1 ms	336 KB	Output is correct
17	Correct	1 ms	640 KB	Output is correct
18	Correct	1 ms	504 KB	Output is correct
19	Correct	1 ms	336 KB	Output is correct
20	Correct	1 ms	504 KB	Output is correct
21	Correct	2 ms	336 KB	Output is correct
22	Correct	2 ms	336 KB	Output is correct
23	Correct	2 ms	336 KB	Output is correct
24	Correct	1 ms	336 KB	Output is correct
25	Correct	2 ms	336 KB	Output is correct
26	Correct	1 ms	588 KB	Output is correct
27	Correct	2 ms	336 KB	Output is correct
28	Correct	1 ms	336 KB	Output is correct
29	Correct	2 ms	336 KB	Output is correct
30	Correct	1 ms	336 KB	Output is correct
31	Correct	8 ms	336 KB	Output is correct
32	Correct	6 ms	336 KB	Output is correct
33	Correct	6 ms	336 KB	Output is correct
34	Correct	5 ms	336 KB	Output is correct
35	Correct	6 ms	336 KB	Output is correct
36	Correct	7 ms	336 KB	Output is correct
37	Correct	5 ms	336 KB	Output is correct
38	Correct	6 ms	336 KB	Output is correct
39	Correct	5 ms	588 KB	Output is correct
40	Correct	5 ms	504 KB	Output is correct
41	Correct	285 ms	336 KB	Output is correct
42	Correct	295 ms	592 KB	Output is correct
43	Correct	285 ms	832 KB	Output is correct
44	Correct	295 ms	576 KB	Output is correct
45	Correct	287 ms	588 KB	Output is correct
46	Correct	273 ms	596 KB	Output is correct
47	Correct	284 ms	572 KB	Output is correct
48	Correct	287 ms	588 KB	Output is correct
49	Correct	323 ms	336 KB	Output is correct
50	Correct	278 ms	336 KB	Output is correct
51	Correct	285 ms	488 KB	Output is correct
52	Correct	297 ms	572 KB	Output is correct
53	Correct	281 ms	592 KB	Output is correct
54	Correct	274 ms	576 KB	Output is correct
55	Correct	276 ms	336 KB	Output is correct

답안 #1114163

Compilation message

Subtask #1 5.0 / 5.0

Subtask #2 7.0 / 7.0

Subtask #3 32.0 / 32.0

Subtask #4 20.0 / 20.0

Subtask #5 36.0 / 36.0

Subtask #1
5.0 / 5.0

Subtask #2
7.0 / 7.0

Subtask #3
32.0 / 32.0

Subtask #4
20.0 / 20.0

Subtask #5
36.0 / 36.0