답안 #476885

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
476885	2021-09-28T23:17:40 Z	Rainbowbunny	Group Photo (JOI21_ho_t3)	C++17	100 / 100	262 ms	67364 KB

Main

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

const int MAXN = 5005;
const int INF = 1e9;

int n;
int H[MAXN], dp[MAXN], pos[MAXN];
int f[MAXN][MAXN];

int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    cin >> n;
    for(int i = 1; i <= n; i++)
    {
        dp[i] = INF;
        cin >> H[i];
        pos[H[i]] = i;
    }
    for(int i = 1; i <= n; i++)
    {
        for(int j = 1; j < i; j++)
        {
            f[i][j] = f[i][j - 1] + (pos[i] < pos[j]);
        }
    }
    for(int i = 0; i <= n; i++)
    {
        int Cost = 0, Inv = 0;
        for(int j = i + 1; j <= n; j++)
        {
            Cost += f[j][i];
            Inv += (f[j][j - 1] - f[j][i]);
            dp[j] = min(dp[j], dp[i] + Cost + min(Inv, (j - i) * (j - i - 1) / 2 - Inv));
        }
    }
    cout << dp[n] << '\n';
}

Subtask #1

5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	332 KB	Output is correct
2	Correct	0 ms	332 KB	Output is correct
3	Correct	1 ms	332 KB	Output is correct
4	Correct	0 ms	332 KB	Output is correct
5	Correct	0 ms	332 KB	Output is correct
6	Correct	1 ms	332 KB	Output is correct
7	Correct	0 ms	332 KB	Output is correct
8	Correct	1 ms	332 KB	Output is correct
9	Correct	0 ms	332 KB	Output is correct
10	Correct	0 ms	332 KB	Output is correct

Subtask #2

7.0 / 7.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	332 KB	Output is correct
2	Correct	0 ms	332 KB	Output is correct
3	Correct	1 ms	332 KB	Output is correct
4	Correct	0 ms	332 KB	Output is correct
5	Correct	0 ms	332 KB	Output is correct
6	Correct	1 ms	332 KB	Output is correct
7	Correct	0 ms	332 KB	Output is correct
8	Correct	1 ms	332 KB	Output is correct
9	Correct	0 ms	332 KB	Output is correct
10	Correct	0 ms	332 KB	Output is correct
11	Correct	0 ms	332 KB	Output is correct
12	Correct	1 ms	332 KB	Output is correct
13	Correct	0 ms	332 KB	Output is correct
14	Correct	1 ms	332 KB	Output is correct
15	Correct	0 ms	332 KB	Output is correct
16	Correct	1 ms	332 KB	Output is correct
17	Correct	1 ms	320 KB	Output is correct
18	Correct	1 ms	332 KB	Output is correct
19	Correct	1 ms	332 KB	Output is correct
20	Correct	1 ms	332 KB	Output is correct

Subtask #3

32.0 / 32.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	332 KB	Output is correct
2	Correct	0 ms	332 KB	Output is correct
3	Correct	1 ms	332 KB	Output is correct
4	Correct	0 ms	332 KB	Output is correct
5	Correct	0 ms	332 KB	Output is correct
6	Correct	1 ms	332 KB	Output is correct
7	Correct	0 ms	332 KB	Output is correct
8	Correct	1 ms	332 KB	Output is correct
9	Correct	0 ms	332 KB	Output is correct
10	Correct	0 ms	332 KB	Output is correct
11	Correct	0 ms	332 KB	Output is correct
12	Correct	1 ms	332 KB	Output is correct
13	Correct	0 ms	332 KB	Output is correct
14	Correct	1 ms	332 KB	Output is correct
15	Correct	0 ms	332 KB	Output is correct
16	Correct	1 ms	332 KB	Output is correct
17	Correct	1 ms	320 KB	Output is correct
18	Correct	1 ms	332 KB	Output is correct
19	Correct	1 ms	332 KB	Output is correct
20	Correct	1 ms	332 KB	Output is correct
21	Correct	1 ms	1100 KB	Output is correct
22	Correct	1 ms	1100 KB	Output is correct
23	Correct	1 ms	1100 KB	Output is correct
24	Correct	1 ms	1100 KB	Output is correct
25	Correct	1 ms	1100 KB	Output is correct
26	Correct	1 ms	1100 KB	Output is correct
27	Correct	1 ms	1100 KB	Output is correct
28	Correct	1 ms	1100 KB	Output is correct
29	Correct	1 ms	1100 KB	Output is correct
30	Correct	1 ms	1100 KB	Output is correct

Subtask #4

20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	332 KB	Output is correct
2	Correct	0 ms	332 KB	Output is correct
3	Correct	1 ms	332 KB	Output is correct
4	Correct	0 ms	332 KB	Output is correct
5	Correct	0 ms	332 KB	Output is correct
6	Correct	1 ms	332 KB	Output is correct
7	Correct	0 ms	332 KB	Output is correct
8	Correct	1 ms	332 KB	Output is correct
9	Correct	0 ms	332 KB	Output is correct
10	Correct	0 ms	332 KB	Output is correct
11	Correct	0 ms	332 KB	Output is correct
12	Correct	1 ms	332 KB	Output is correct
13	Correct	0 ms	332 KB	Output is correct
14	Correct	1 ms	332 KB	Output is correct
15	Correct	0 ms	332 KB	Output is correct
16	Correct	1 ms	332 KB	Output is correct
17	Correct	1 ms	320 KB	Output is correct
18	Correct	1 ms	332 KB	Output is correct
19	Correct	1 ms	332 KB	Output is correct
20	Correct	1 ms	332 KB	Output is correct
21	Correct	1 ms	1100 KB	Output is correct
22	Correct	1 ms	1100 KB	Output is correct
23	Correct	1 ms	1100 KB	Output is correct
24	Correct	1 ms	1100 KB	Output is correct
25	Correct	1 ms	1100 KB	Output is correct
26	Correct	1 ms	1100 KB	Output is correct
27	Correct	1 ms	1100 KB	Output is correct
28	Correct	1 ms	1100 KB	Output is correct
29	Correct	1 ms	1100 KB	Output is correct
30	Correct	1 ms	1100 KB	Output is correct
31	Correct	5 ms	4792 KB	Output is correct
32	Correct	5 ms	4684 KB	Output is correct
33	Correct	5 ms	4684 KB	Output is correct
34	Correct	7 ms	4804 KB	Output is correct
35	Correct	5 ms	4684 KB	Output is correct
36	Correct	5 ms	4812 KB	Output is correct
37	Correct	6 ms	4812 KB	Output is correct
38	Correct	6 ms	4812 KB	Output is correct
39	Correct	5 ms	4684 KB	Output is correct
40	Correct	5 ms	4684 KB	Output is correct

Subtask #5

36.0 / 36.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	332 KB	Output is correct
2	Correct	0 ms	332 KB	Output is correct
3	Correct	1 ms	332 KB	Output is correct
4	Correct	0 ms	332 KB	Output is correct
5	Correct	0 ms	332 KB	Output is correct
6	Correct	1 ms	332 KB	Output is correct
7	Correct	0 ms	332 KB	Output is correct
8	Correct	1 ms	332 KB	Output is correct
9	Correct	0 ms	332 KB	Output is correct
10	Correct	0 ms	332 KB	Output is correct
11	Correct	0 ms	332 KB	Output is correct
12	Correct	1 ms	332 KB	Output is correct
13	Correct	0 ms	332 KB	Output is correct
14	Correct	1 ms	332 KB	Output is correct
15	Correct	0 ms	332 KB	Output is correct
16	Correct	1 ms	332 KB	Output is correct
17	Correct	1 ms	320 KB	Output is correct
18	Correct	1 ms	332 KB	Output is correct
19	Correct	1 ms	332 KB	Output is correct
20	Correct	1 ms	332 KB	Output is correct
21	Correct	1 ms	1100 KB	Output is correct
22	Correct	1 ms	1100 KB	Output is correct
23	Correct	1 ms	1100 KB	Output is correct
24	Correct	1 ms	1100 KB	Output is correct
25	Correct	1 ms	1100 KB	Output is correct
26	Correct	1 ms	1100 KB	Output is correct
27	Correct	1 ms	1100 KB	Output is correct
28	Correct	1 ms	1100 KB	Output is correct
29	Correct	1 ms	1100 KB	Output is correct
30	Correct	1 ms	1100 KB	Output is correct
31	Correct	5 ms	4792 KB	Output is correct
32	Correct	5 ms	4684 KB	Output is correct
33	Correct	5 ms	4684 KB	Output is correct
34	Correct	7 ms	4804 KB	Output is correct
35	Correct	5 ms	4684 KB	Output is correct
36	Correct	5 ms	4812 KB	Output is correct
37	Correct	6 ms	4812 KB	Output is correct
38	Correct	6 ms	4812 KB	Output is correct
39	Correct	5 ms	4684 KB	Output is correct
40	Correct	5 ms	4684 KB	Output is correct
41	Correct	260 ms	67276 KB	Output is correct
42	Correct	260 ms	67224 KB	Output is correct
43	Correct	254 ms	67364 KB	Output is correct
44	Correct	250 ms	67220 KB	Output is correct
45	Correct	258 ms	67268 KB	Output is correct
46	Correct	251 ms	67248 KB	Output is correct
47	Correct	255 ms	67332 KB	Output is correct
48	Correct	256 ms	67336 KB	Output is correct
49	Correct	239 ms	67272 KB	Output is correct
50	Correct	255 ms	67284 KB	Output is correct
51	Correct	250 ms	67312 KB	Output is correct
52	Correct	254 ms	67356 KB	Output is correct
53	Correct	262 ms	67268 KB	Output is correct
54	Correct	253 ms	67248 KB	Output is correct
55	Correct	246 ms	67268 KB	Output is correct