답안 #784773

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
784773	2023-07-16T13:52:35 Z	borisAngelov	Group Photo (JOI21_ho_t3)	C++17	64 / 100	5000 ms	452 KB

Main

#include <bits/stdc++.h>

using namespace std;

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

int n;

int p[maxn];
int pos[maxn];

int dp[maxn];

int tree_original[maxn];

void update_original(int idx, int val)
{
    for (int i = idx; i <= n; i += (i & (-i)))
    {
        tree_original[i] += val;
    }
}

int query_original(int idx)
{
    int result = 0;

    for (int i = idx; i >= 1; i -= (i & (-i)))
    {
        result += tree_original[i];
    }

    return result;
}

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 >> p[i];
        pos[p[i]] = i;
    }

    dp[n + 1] = 0;

    for (int i = n; i >= 1; --i)
    {
        update_original(pos[i], +1);

        dp[i] = 1e9;

        int cost = 0;

        for (int j = i; j <= n; ++j)
        {
            cost += query_original(pos[j]) - 1;

            for (int k = 1; k <= n; ++k)
            {
                if (pos[k] > pos[j] && k >= i && k <= j)
                {
                    --cost;
                }
            }

            dp[i] = min(dp[i], dp[j + 1] + cost);
        }
    }

    cout << dp[1] << endl;

    return 0;
}

Subtask #1
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	332 KB	Output is correct
2	Correct	1 ms	340 KB	Output is correct
3	Correct	1 ms	340 KB	Output is correct
4	Correct	1 ms	340 KB	Output is correct
5	Correct	1 ms	340 KB	Output is correct
6	Correct	1 ms	340 KB	Output is correct
7	Correct	1 ms	332 KB	Output is correct
8	Correct	1 ms	212 KB	Output is correct
9	Correct	1 ms	340 KB	Output is correct
10	Correct	1 ms	212 KB	Output is correct

Subtask #2
7.0 / 7.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	332 KB	Output is correct
2	Correct	1 ms	340 KB	Output is correct
3	Correct	1 ms	340 KB	Output is correct
4	Correct	1 ms	340 KB	Output is correct
5	Correct	1 ms	340 KB	Output is correct
6	Correct	1 ms	340 KB	Output is correct
7	Correct	1 ms	332 KB	Output is correct
8	Correct	1 ms	212 KB	Output is correct
9	Correct	1 ms	340 KB	Output is correct
10	Correct	1 ms	212 KB	Output is correct
11	Correct	1 ms	212 KB	Output is correct
12	Correct	1 ms	340 KB	Output is correct
13	Correct	1 ms	340 KB	Output is correct
14	Correct	1 ms	340 KB	Output is correct
15	Correct	1 ms	212 KB	Output is correct
16	Correct	1 ms	340 KB	Output is correct
17	Correct	1 ms	340 KB	Output is correct
18	Correct	0 ms	340 KB	Output is correct
19	Correct	1 ms	340 KB	Output is correct
20	Correct	1 ms	212 KB	Output is correct

Subtask #3
32.0 / 32.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	332 KB	Output is correct
2	Correct	1 ms	340 KB	Output is correct
3	Correct	1 ms	340 KB	Output is correct
4	Correct	1 ms	340 KB	Output is correct
5	Correct	1 ms	340 KB	Output is correct
6	Correct	1 ms	340 KB	Output is correct
7	Correct	1 ms	332 KB	Output is correct
8	Correct	1 ms	212 KB	Output is correct
9	Correct	1 ms	340 KB	Output is correct
10	Correct	1 ms	212 KB	Output is correct
11	Correct	1 ms	212 KB	Output is correct
12	Correct	1 ms	340 KB	Output is correct
13	Correct	1 ms	340 KB	Output is correct
14	Correct	1 ms	340 KB	Output is correct
15	Correct	1 ms	212 KB	Output is correct
16	Correct	1 ms	340 KB	Output is correct
17	Correct	1 ms	340 KB	Output is correct
18	Correct	0 ms	340 KB	Output is correct
19	Correct	1 ms	340 KB	Output is correct
20	Correct	1 ms	212 KB	Output is correct
21	Correct	7 ms	340 KB	Output is correct
22	Correct	7 ms	336 KB	Output is correct
23	Correct	7 ms	340 KB	Output is correct
24	Correct	8 ms	340 KB	Output is correct
25	Correct	8 ms	340 KB	Output is correct
26	Correct	8 ms	340 KB	Output is correct
27	Correct	8 ms	344 KB	Output is correct
28	Correct	9 ms	336 KB	Output is correct
29	Correct	7 ms	324 KB	Output is correct
30	Correct	8 ms	340 KB	Output is correct

Subtask #4
20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	332 KB	Output is correct
2	Correct	1 ms	340 KB	Output is correct
3	Correct	1 ms	340 KB	Output is correct
4	Correct	1 ms	340 KB	Output is correct
5	Correct	1 ms	340 KB	Output is correct
6	Correct	1 ms	340 KB	Output is correct
7	Correct	1 ms	332 KB	Output is correct
8	Correct	1 ms	212 KB	Output is correct
9	Correct	1 ms	340 KB	Output is correct
10	Correct	1 ms	212 KB	Output is correct
11	Correct	1 ms	212 KB	Output is correct
12	Correct	1 ms	340 KB	Output is correct
13	Correct	1 ms	340 KB	Output is correct
14	Correct	1 ms	340 KB	Output is correct
15	Correct	1 ms	212 KB	Output is correct
16	Correct	1 ms	340 KB	Output is correct
17	Correct	1 ms	340 KB	Output is correct
18	Correct	0 ms	340 KB	Output is correct
19	Correct	1 ms	340 KB	Output is correct
20	Correct	1 ms	212 KB	Output is correct
21	Correct	7 ms	340 KB	Output is correct
22	Correct	7 ms	336 KB	Output is correct
23	Correct	7 ms	340 KB	Output is correct
24	Correct	8 ms	340 KB	Output is correct
25	Correct	8 ms	340 KB	Output is correct
26	Correct	8 ms	340 KB	Output is correct
27	Correct	8 ms	344 KB	Output is correct
28	Correct	9 ms	336 KB	Output is correct
29	Correct	7 ms	324 KB	Output is correct
30	Correct	8 ms	340 KB	Output is correct
31	Correct	580 ms	340 KB	Output is correct
32	Correct	579 ms	340 KB	Output is correct
33	Correct	579 ms	340 KB	Output is correct
34	Correct	588 ms	340 KB	Output is correct
35	Correct	580 ms	340 KB	Output is correct
36	Correct	595 ms	340 KB	Output is correct
37	Correct	570 ms	340 KB	Output is correct
38	Correct	596 ms	452 KB	Output is correct
39	Correct	609 ms	340 KB	Output is correct
40	Correct	594 ms	340 KB	Output is correct

Subtask #5
0 / 36.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	332 KB	Output is correct
2	Correct	1 ms	340 KB	Output is correct
3	Correct	1 ms	340 KB	Output is correct
4	Correct	1 ms	340 KB	Output is correct
5	Correct	1 ms	340 KB	Output is correct
6	Correct	1 ms	340 KB	Output is correct
7	Correct	1 ms	332 KB	Output is correct
8	Correct	1 ms	212 KB	Output is correct
9	Correct	1 ms	340 KB	Output is correct
10	Correct	1 ms	212 KB	Output is correct
11	Correct	1 ms	212 KB	Output is correct
12	Correct	1 ms	340 KB	Output is correct
13	Correct	1 ms	340 KB	Output is correct
14	Correct	1 ms	340 KB	Output is correct
15	Correct	1 ms	212 KB	Output is correct
16	Correct	1 ms	340 KB	Output is correct
17	Correct	1 ms	340 KB	Output is correct
18	Correct	0 ms	340 KB	Output is correct
19	Correct	1 ms	340 KB	Output is correct
20	Correct	1 ms	212 KB	Output is correct
21	Correct	7 ms	340 KB	Output is correct
22	Correct	7 ms	336 KB	Output is correct
23	Correct	7 ms	340 KB	Output is correct
24	Correct	8 ms	340 KB	Output is correct
25	Correct	8 ms	340 KB	Output is correct
26	Correct	8 ms	340 KB	Output is correct
27	Correct	8 ms	344 KB	Output is correct
28	Correct	9 ms	336 KB	Output is correct
29	Correct	7 ms	324 KB	Output is correct
30	Correct	8 ms	340 KB	Output is correct
31	Correct	580 ms	340 KB	Output is correct
32	Correct	579 ms	340 KB	Output is correct
33	Correct	579 ms	340 KB	Output is correct
34	Correct	588 ms	340 KB	Output is correct
35	Correct	580 ms	340 KB	Output is correct
36	Correct	595 ms	340 KB	Output is correct
37	Correct	570 ms	340 KB	Output is correct
38	Correct	596 ms	452 KB	Output is correct
39	Correct	609 ms	340 KB	Output is correct
40	Correct	594 ms	340 KB	Output is correct
41	Execution timed out	5063 ms	388 KB	Time limit exceeded
42	Halted	0 ms	0 KB	-

답안 #784773

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 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
0 / 36.0