Submission #386866

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
386866	2021-04-07T14:12:00 Z	nikatamliani	Group Photo (JOI21_ho_t3)	C++14	100 / 100	760 ms	313800 KB

Main

#include <iostream>
#define ll long long
using namespace std;
const int N = 5e3+5;
ll n, a[N], id[N], dp[N], cnt[N][N], cost[N][N];
int main() {
	ios::sync_with_stdio(0); cin.tie(0);
	cin >> n;
	for(int i = 1; i <= n; ++i) {
		cin >> a[i];
		id[a[i]] = i;
	}
	for(int i = 1; i <= n; ++i) {
		for(int j = n; j >= 1; --j) {
			cnt[i][j] = cnt[i][j+1] + (id[j] < id[i]);
		}
	}
	for(int L = 1; L <= n; ++L) {
		for(int R = L; R <= n; ++R) {
			cost[L][R] = cost[L][R - 1] + cnt[R][L] - (R - L - (cnt[R][L] - cnt[R][R+1]));
		}
	}
	for(int i = 1; i <= n; ++i) {
		dp[i] = 1e15;
		for(int j = 0; j < i; ++j) {
			dp[i] = min(dp[i], dp[j] + cost[j+1][i]);
		}
	}
	cout << dp[n] << endl;
}

Subtask #1
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	364 KB	Output is correct
2	Correct	1 ms	364 KB	Output is correct
3	Correct	1 ms	364 KB	Output is correct
4	Correct	1 ms	384 KB	Output is correct
5	Correct	1 ms	364 KB	Output is correct
6	Correct	1 ms	364 KB	Output is correct
7	Correct	1 ms	492 KB	Output is correct
8	Correct	1 ms	492 KB	Output is correct
9	Correct	2 ms	492 KB	Output is correct
10	Correct	2 ms	492 KB	Output is correct

Subtask #2
7.0 / 7.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	364 KB	Output is correct
2	Correct	1 ms	364 KB	Output is correct
3	Correct	1 ms	364 KB	Output is correct
4	Correct	1 ms	384 KB	Output is correct
5	Correct	1 ms	364 KB	Output is correct
6	Correct	1 ms	364 KB	Output is correct
7	Correct	1 ms	492 KB	Output is correct
8	Correct	1 ms	492 KB	Output is correct
9	Correct	2 ms	492 KB	Output is correct
10	Correct	2 ms	492 KB	Output is correct
11	Correct	1 ms	492 KB	Output is correct
12	Correct	2 ms	492 KB	Output is correct
13	Correct	2 ms	492 KB	Output is correct
14	Correct	1 ms	492 KB	Output is correct
15	Correct	1 ms	492 KB	Output is correct
16	Correct	1 ms	492 KB	Output is correct
17	Correct	1 ms	492 KB	Output is correct
18	Correct	1 ms	492 KB	Output is correct
19	Correct	1 ms	492 KB	Output is correct
20	Correct	1 ms	492 KB	Output is correct

Subtask #3
32.0 / 32.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	364 KB	Output is correct
2	Correct	1 ms	364 KB	Output is correct
3	Correct	1 ms	364 KB	Output is correct
4	Correct	1 ms	384 KB	Output is correct
5	Correct	1 ms	364 KB	Output is correct
6	Correct	1 ms	364 KB	Output is correct
7	Correct	1 ms	492 KB	Output is correct
8	Correct	1 ms	492 KB	Output is correct
9	Correct	2 ms	492 KB	Output is correct
10	Correct	2 ms	492 KB	Output is correct
11	Correct	1 ms	492 KB	Output is correct
12	Correct	2 ms	492 KB	Output is correct
13	Correct	2 ms	492 KB	Output is correct
14	Correct	1 ms	492 KB	Output is correct
15	Correct	1 ms	492 KB	Output is correct
16	Correct	1 ms	492 KB	Output is correct
17	Correct	1 ms	492 KB	Output is correct
18	Correct	1 ms	492 KB	Output is correct
19	Correct	1 ms	492 KB	Output is correct
20	Correct	1 ms	492 KB	Output is correct
21	Correct	3 ms	2412 KB	Output is correct
22	Correct	3 ms	2412 KB	Output is correct
23	Correct	3 ms	2412 KB	Output is correct
24	Correct	3 ms	2412 KB	Output is correct
25	Correct	3 ms	2412 KB	Output is correct
26	Correct	3 ms	2436 KB	Output is correct
27	Correct	3 ms	2412 KB	Output is correct
28	Correct	3 ms	2412 KB	Output is correct
29	Correct	4 ms	2412 KB	Output is correct
30	Correct	3 ms	2412 KB	Output is correct

Subtask #4
20.0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	364 KB	Output is correct
2	Correct	1 ms	364 KB	Output is correct
3	Correct	1 ms	364 KB	Output is correct
4	Correct	1 ms	384 KB	Output is correct
5	Correct	1 ms	364 KB	Output is correct
6	Correct	1 ms	364 KB	Output is correct
7	Correct	1 ms	492 KB	Output is correct
8	Correct	1 ms	492 KB	Output is correct
9	Correct	2 ms	492 KB	Output is correct
10	Correct	2 ms	492 KB	Output is correct
11	Correct	1 ms	492 KB	Output is correct
12	Correct	2 ms	492 KB	Output is correct
13	Correct	2 ms	492 KB	Output is correct
14	Correct	1 ms	492 KB	Output is correct
15	Correct	1 ms	492 KB	Output is correct
16	Correct	1 ms	492 KB	Output is correct
17	Correct	1 ms	492 KB	Output is correct
18	Correct	1 ms	492 KB	Output is correct
19	Correct	1 ms	492 KB	Output is correct
20	Correct	1 ms	492 KB	Output is correct
21	Correct	3 ms	2412 KB	Output is correct
22	Correct	3 ms	2412 KB	Output is correct
23	Correct	3 ms	2412 KB	Output is correct
24	Correct	3 ms	2412 KB	Output is correct
25	Correct	3 ms	2412 KB	Output is correct
26	Correct	3 ms	2436 KB	Output is correct
27	Correct	3 ms	2412 KB	Output is correct
28	Correct	3 ms	2412 KB	Output is correct
29	Correct	4 ms	2412 KB	Output is correct
30	Correct	3 ms	2412 KB	Output is correct
31	Correct	17 ms	14336 KB	Output is correct
32	Correct	15 ms	14316 KB	Output is correct
33	Correct	15 ms	14316 KB	Output is correct
34	Correct	15 ms	14444 KB	Output is correct
35	Correct	15 ms	14444 KB	Output is correct
36	Correct	15 ms	14444 KB	Output is correct
37	Correct	15 ms	14444 KB	Output is correct
38	Correct	15 ms	14444 KB	Output is correct
39	Correct	15 ms	14444 KB	Output is correct
40	Correct	17 ms	14444 KB	Output is correct

Subtask #5
36.0 / 36.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	364 KB	Output is correct
2	Correct	1 ms	364 KB	Output is correct
3	Correct	1 ms	364 KB	Output is correct
4	Correct	1 ms	384 KB	Output is correct
5	Correct	1 ms	364 KB	Output is correct
6	Correct	1 ms	364 KB	Output is correct
7	Correct	1 ms	492 KB	Output is correct
8	Correct	1 ms	492 KB	Output is correct
9	Correct	2 ms	492 KB	Output is correct
10	Correct	2 ms	492 KB	Output is correct
11	Correct	1 ms	492 KB	Output is correct
12	Correct	2 ms	492 KB	Output is correct
13	Correct	2 ms	492 KB	Output is correct
14	Correct	1 ms	492 KB	Output is correct
15	Correct	1 ms	492 KB	Output is correct
16	Correct	1 ms	492 KB	Output is correct
17	Correct	1 ms	492 KB	Output is correct
18	Correct	1 ms	492 KB	Output is correct
19	Correct	1 ms	492 KB	Output is correct
20	Correct	1 ms	492 KB	Output is correct
21	Correct	3 ms	2412 KB	Output is correct
22	Correct	3 ms	2412 KB	Output is correct
23	Correct	3 ms	2412 KB	Output is correct
24	Correct	3 ms	2412 KB	Output is correct
25	Correct	3 ms	2412 KB	Output is correct
26	Correct	3 ms	2436 KB	Output is correct
27	Correct	3 ms	2412 KB	Output is correct
28	Correct	3 ms	2412 KB	Output is correct
29	Correct	4 ms	2412 KB	Output is correct
30	Correct	3 ms	2412 KB	Output is correct
31	Correct	17 ms	14336 KB	Output is correct
32	Correct	15 ms	14316 KB	Output is correct
33	Correct	15 ms	14316 KB	Output is correct
34	Correct	15 ms	14444 KB	Output is correct
35	Correct	15 ms	14444 KB	Output is correct
36	Correct	15 ms	14444 KB	Output is correct
37	Correct	15 ms	14444 KB	Output is correct
38	Correct	15 ms	14444 KB	Output is correct
39	Correct	15 ms	14444 KB	Output is correct
40	Correct	17 ms	14444 KB	Output is correct
41	Correct	703 ms	313196 KB	Output is correct
42	Correct	710 ms	313324 KB	Output is correct
43	Correct	701 ms	313324 KB	Output is correct
44	Correct	698 ms	313324 KB	Output is correct
45	Correct	702 ms	313248 KB	Output is correct
46	Correct	760 ms	313452 KB	Output is correct
47	Correct	704 ms	313452 KB	Output is correct
48	Correct	718 ms	313496 KB	Output is correct
49	Correct	697 ms	313452 KB	Output is correct
50	Correct	732 ms	313580 KB	Output is correct
51	Correct	719 ms	313452 KB	Output is correct
52	Correct	696 ms	313452 KB	Output is correct
53	Correct	705 ms	313324 KB	Output is correct
54	Correct	742 ms	313800 KB	Output is correct
55	Correct	696 ms	313452 KB	Output is correct

Submission #386866

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