Submission #373071

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
373071	2021-03-03T08:51:53 Z	GioChkhaidze	Group Photo (JOI21_ho_t3)	C++14	100 / 100	417 ms	134656 KB

Main

#include <bits/stdc++.h>

#define ll long long

using namespace std;

const int N = 5005;

int n, q, a[N], inv[N][N], invr[N][N], S[N], Dp[N];

main () {
	ios::sync_with_stdio(false);
	cin.tie(NULL), cout.tie(NULL);
	cin >> n;
	for (int i = 1; i <= n; ++i) {
		cin >> a[i];
	}
	
	for (int i = 1; i <= n; ++i) {
		for (int j = a[i]; j <= n; ++j) {
			++S[j];
		}	
		
		for (int x = a[i] + 1; x <= n; ++x) {
			inv[a[i]][x] = S[n] - S[x - 1];
			invr[a[i]][x] = (x - a[i]) - (S[x] - S[a[i]]);
		}
	}

	ll U;
	for (int r = 1; r <= n; ++r) {
		Dp[r] = 1e9, U = 0;
		for (int l = r; l >= 1; --l) {
			U += inv[l][r + 1] + invr[l][r];
			if (Dp[r] > Dp[l - 1] + U)
				Dp[r] = Dp[l - 1] + U;
		}
	}
	
	cout << Dp[n] << "\n";
}

Compilation message

Main.cpp:11:7: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   11 | main () {
      |       ^

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	364 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	364 KB	Output is correct
8	Correct	1 ms	364 KB	Output is correct
9	Correct	1 ms	364 KB	Output is correct
10	Correct	1 ms	364 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	364 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	364 KB	Output is correct
8	Correct	1 ms	364 KB	Output is correct
9	Correct	1 ms	364 KB	Output is correct
10	Correct	1 ms	364 KB	Output is correct
11	Correct	1 ms	492 KB	Output is correct
12	Correct	1 ms	492 KB	Output is correct
13	Correct	1 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	364 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	364 KB	Output is correct
8	Correct	1 ms	364 KB	Output is correct
9	Correct	1 ms	364 KB	Output is correct
10	Correct	1 ms	364 KB	Output is correct
11	Correct	1 ms	492 KB	Output is correct
12	Correct	1 ms	492 KB	Output is correct
13	Correct	1 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	2 ms	2156 KB	Output is correct
22	Correct	2 ms	2156 KB	Output is correct
23	Correct	2 ms	2156 KB	Output is correct
24	Correct	2 ms	2156 KB	Output is correct
25	Correct	2 ms	2156 KB	Output is correct
26	Correct	2 ms	2156 KB	Output is correct
27	Correct	2 ms	2156 KB	Output is correct
28	Correct	1 ms	2156 KB	Output is correct
29	Correct	2 ms	2156 KB	Output is correct
30	Correct	1 ms	2156 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	364 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	364 KB	Output is correct
8	Correct	1 ms	364 KB	Output is correct
9	Correct	1 ms	364 KB	Output is correct
10	Correct	1 ms	364 KB	Output is correct
11	Correct	1 ms	492 KB	Output is correct
12	Correct	1 ms	492 KB	Output is correct
13	Correct	1 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	2 ms	2156 KB	Output is correct
22	Correct	2 ms	2156 KB	Output is correct
23	Correct	2 ms	2156 KB	Output is correct
24	Correct	2 ms	2156 KB	Output is correct
25	Correct	2 ms	2156 KB	Output is correct
26	Correct	2 ms	2156 KB	Output is correct
27	Correct	2 ms	2156 KB	Output is correct
28	Correct	1 ms	2156 KB	Output is correct
29	Correct	2 ms	2156 KB	Output is correct
30	Correct	1 ms	2156 KB	Output is correct
31	Correct	9 ms	9324 KB	Output is correct
32	Correct	9 ms	9324 KB	Output is correct
33	Correct	9 ms	9324 KB	Output is correct
34	Correct	9 ms	9324 KB	Output is correct
35	Correct	11 ms	9324 KB	Output is correct
36	Correct	9 ms	9324 KB	Output is correct
37	Correct	10 ms	9324 KB	Output is correct
38	Correct	9 ms	9324 KB	Output is correct
39	Correct	9 ms	9324 KB	Output is correct
40	Correct	9 ms	9324 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	364 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	364 KB	Output is correct
8	Correct	1 ms	364 KB	Output is correct
9	Correct	1 ms	364 KB	Output is correct
10	Correct	1 ms	364 KB	Output is correct
11	Correct	1 ms	492 KB	Output is correct
12	Correct	1 ms	492 KB	Output is correct
13	Correct	1 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	2 ms	2156 KB	Output is correct
22	Correct	2 ms	2156 KB	Output is correct
23	Correct	2 ms	2156 KB	Output is correct
24	Correct	2 ms	2156 KB	Output is correct
25	Correct	2 ms	2156 KB	Output is correct
26	Correct	2 ms	2156 KB	Output is correct
27	Correct	2 ms	2156 KB	Output is correct
28	Correct	1 ms	2156 KB	Output is correct
29	Correct	2 ms	2156 KB	Output is correct
30	Correct	1 ms	2156 KB	Output is correct
31	Correct	9 ms	9324 KB	Output is correct
32	Correct	9 ms	9324 KB	Output is correct
33	Correct	9 ms	9324 KB	Output is correct
34	Correct	9 ms	9324 KB	Output is correct
35	Correct	11 ms	9324 KB	Output is correct
36	Correct	9 ms	9324 KB	Output is correct
37	Correct	10 ms	9324 KB	Output is correct
38	Correct	9 ms	9324 KB	Output is correct
39	Correct	9 ms	9324 KB	Output is correct
40	Correct	9 ms	9324 KB	Output is correct
41	Correct	401 ms	134252 KB	Output is correct
42	Correct	403 ms	134396 KB	Output is correct
43	Correct	401 ms	134516 KB	Output is correct
44	Correct	393 ms	134252 KB	Output is correct
45	Correct	402 ms	134380 KB	Output is correct
46	Correct	407 ms	134380 KB	Output is correct
47	Correct	398 ms	134504 KB	Output is correct
48	Correct	402 ms	134656 KB	Output is correct
49	Correct	402 ms	134636 KB	Output is correct
50	Correct	404 ms	134508 KB	Output is correct
51	Correct	403 ms	134380 KB	Output is correct
52	Correct	399 ms	134380 KB	Output is correct
53	Correct	401 ms	134380 KB	Output is correct
54	Correct	395 ms	134380 KB	Output is correct
55	Correct	417 ms	134508 KB	Output is correct