답안 #469174

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
469174	2021-08-31T03:55:51 Z	Killer2501	Group Photo (JOI21_ho_t3)	C++14	100 / 100	231 ms	117624 KB

Main

#include <bits/stdc++.h>
#define ll long long
#define pb push_back
using namespace std;
const int N = 5e3 + 5;
const ll mod = 1e12 + 7;
ll n, m, a[N], b[N], x[N], dp[N], inv[N][N], tong;

void sol()
{
    cin >> n;
    for (int i = 1; i <= n; i++)
    {
        cin >> a[i];
        b[a[i]] = i;
    }
    for (int i = 1; i <= n; i++)
    {
        tong = 0;
        for (int j = i - 1; j > 0; j--)
        {
            if (b[i] < b[j])
                ++tong;
            inv[i][j] = inv[i - 1][j] + tong;
        }
    }
    for (int i = 2; i <= n; i++)
    {
        dp[i] = mod;
        for (int j = i - 1; j >= 0; j--)
        {
            dp[i] = min(dp[i], dp[j] + inv[i][1] - inv[j][1] + (i - j) * (i - j - 1) / 2 - inv[i][j + 1] * 2);
        }
        //cout << dp[i] << " ";
    }
    cout << dp[n];
}
int main()
{
    cin.tie(0);
    cout.tie(0);
    ios_base::sync_with_stdio(0);
    int test = 1;
    //cin >> test;
    while (test-- > 0)
        sol();
    return 0;
}
/*
5
2 1 3 5 4
*/
// ctrl + F8 = compile
// ctrl + F9 = run

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	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	1 ms	332 KB	Output is correct
6	Correct	0 ms	332 KB	Output is correct
7	Correct	1 ms	332 KB	Output is correct
8	Correct	1 ms	332 KB	Output is correct
9	Correct	1 ms	332 KB	Output is correct
10	Correct	1 ms	332 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	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	1 ms	332 KB	Output is correct
6	Correct	0 ms	332 KB	Output is correct
7	Correct	1 ms	332 KB	Output is correct
8	Correct	1 ms	332 KB	Output is correct
9	Correct	1 ms	332 KB	Output is correct
10	Correct	1 ms	332 KB	Output is correct
11	Correct	1 ms	332 KB	Output is correct
12	Correct	1 ms	332 KB	Output is correct
13	Correct	1 ms	332 KB	Output is correct
14	Correct	1 ms	316 KB	Output is correct
15	Correct	1 ms	332 KB	Output is correct
16	Correct	1 ms	332 KB	Output is correct
17	Correct	1 ms	332 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	1 ms	332 KB	Output is correct
2	Correct	1 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	1 ms	332 KB	Output is correct
6	Correct	0 ms	332 KB	Output is correct
7	Correct	1 ms	332 KB	Output is correct
8	Correct	1 ms	332 KB	Output is correct
9	Correct	1 ms	332 KB	Output is correct
10	Correct	1 ms	332 KB	Output is correct
11	Correct	1 ms	332 KB	Output is correct
12	Correct	1 ms	332 KB	Output is correct
13	Correct	1 ms	332 KB	Output is correct
14	Correct	1 ms	316 KB	Output is correct
15	Correct	1 ms	332 KB	Output is correct
16	Correct	1 ms	332 KB	Output is correct
17	Correct	1 ms	332 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	1216 KB	Output is correct
22	Correct	1 ms	1228 KB	Output is correct
23	Correct	1 ms	1228 KB	Output is correct
24	Correct	1 ms	1228 KB	Output is correct
25	Correct	2 ms	1300 KB	Output is correct
26	Correct	1 ms	1228 KB	Output is correct
27	Correct	1 ms	1228 KB	Output is correct
28	Correct	1 ms	1228 KB	Output is correct
29	Correct	1 ms	1228 KB	Output is correct
30	Correct	1 ms	1216 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	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	1 ms	332 KB	Output is correct
6	Correct	0 ms	332 KB	Output is correct
7	Correct	1 ms	332 KB	Output is correct
8	Correct	1 ms	332 KB	Output is correct
9	Correct	1 ms	332 KB	Output is correct
10	Correct	1 ms	332 KB	Output is correct
11	Correct	1 ms	332 KB	Output is correct
12	Correct	1 ms	332 KB	Output is correct
13	Correct	1 ms	332 KB	Output is correct
14	Correct	1 ms	316 KB	Output is correct
15	Correct	1 ms	332 KB	Output is correct
16	Correct	1 ms	332 KB	Output is correct
17	Correct	1 ms	332 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	1216 KB	Output is correct
22	Correct	1 ms	1228 KB	Output is correct
23	Correct	1 ms	1228 KB	Output is correct
24	Correct	1 ms	1228 KB	Output is correct
25	Correct	2 ms	1300 KB	Output is correct
26	Correct	1 ms	1228 KB	Output is correct
27	Correct	1 ms	1228 KB	Output is correct
28	Correct	1 ms	1228 KB	Output is correct
29	Correct	1 ms	1228 KB	Output is correct
30	Correct	1 ms	1216 KB	Output is correct
31	Correct	6 ms	5964 KB	Output is correct
32	Correct	5 ms	6092 KB	Output is correct
33	Correct	5 ms	6092 KB	Output is correct
34	Correct	5 ms	6092 KB	Output is correct
35	Correct	5 ms	6076 KB	Output is correct
36	Correct	5 ms	6092 KB	Output is correct
37	Correct	5 ms	6092 KB	Output is correct
38	Correct	6 ms	6092 KB	Output is correct
39	Correct	5 ms	6072 KB	Output is correct
40	Correct	5 ms	6108 KB	Output is correct

Subtask #5
36.0 / 36.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	332 KB	Output is correct
2	Correct	1 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	1 ms	332 KB	Output is correct
6	Correct	0 ms	332 KB	Output is correct
7	Correct	1 ms	332 KB	Output is correct
8	Correct	1 ms	332 KB	Output is correct
9	Correct	1 ms	332 KB	Output is correct
10	Correct	1 ms	332 KB	Output is correct
11	Correct	1 ms	332 KB	Output is correct
12	Correct	1 ms	332 KB	Output is correct
13	Correct	1 ms	332 KB	Output is correct
14	Correct	1 ms	316 KB	Output is correct
15	Correct	1 ms	332 KB	Output is correct
16	Correct	1 ms	332 KB	Output is correct
17	Correct	1 ms	332 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	1216 KB	Output is correct
22	Correct	1 ms	1228 KB	Output is correct
23	Correct	1 ms	1228 KB	Output is correct
24	Correct	1 ms	1228 KB	Output is correct
25	Correct	2 ms	1300 KB	Output is correct
26	Correct	1 ms	1228 KB	Output is correct
27	Correct	1 ms	1228 KB	Output is correct
28	Correct	1 ms	1228 KB	Output is correct
29	Correct	1 ms	1228 KB	Output is correct
30	Correct	1 ms	1216 KB	Output is correct
31	Correct	6 ms	5964 KB	Output is correct
32	Correct	5 ms	6092 KB	Output is correct
33	Correct	5 ms	6092 KB	Output is correct
34	Correct	5 ms	6092 KB	Output is correct
35	Correct	5 ms	6076 KB	Output is correct
36	Correct	5 ms	6092 KB	Output is correct
37	Correct	5 ms	6092 KB	Output is correct
38	Correct	6 ms	6092 KB	Output is correct
39	Correct	5 ms	6072 KB	Output is correct
40	Correct	5 ms	6108 KB	Output is correct
41	Correct	222 ms	117432 KB	Output is correct
42	Correct	217 ms	117316 KB	Output is correct
43	Correct	226 ms	117372 KB	Output is correct
44	Correct	221 ms	117512 KB	Output is correct
45	Correct	220 ms	117280 KB	Output is correct
46	Correct	216 ms	117404 KB	Output is correct
47	Correct	223 ms	117624 KB	Output is correct
48	Correct	221 ms	117396 KB	Output is correct
49	Correct	222 ms	117476 KB	Output is correct
50	Correct	222 ms	117572 KB	Output is correct
51	Correct	224 ms	117300 KB	Output is correct
52	Correct	219 ms	117316 KB	Output is correct
53	Correct	231 ms	117520 KB	Output is correct
54	Correct	219 ms	117460 KB	Output is correct
55	Correct	223 ms	117380 KB	Output is correct

답안 #469174

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