Submission #916743

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
916743	2024-01-26T12:46:10 Z	NintsiChkhaidze	Group Photo (JOI21_ho_t3)	C++17	100 / 100	633 ms	196024 KB

Main

#include <bits/stdc++.h>
#define ll long long
#define s second
#define f first
#define pb push_back
#define pii pair <int,int>
#define left (h<<1),l,(l + r)/2
#define right ((h<<1)|1),(l + r)/2 + 1,r
#define int ll 
using namespace std;

const int N = 5e3 + 3,inf = 1e18;

int a[N],dp[N],id[N],val[N],pr[N];
int fen[N],D[N][N];

void upd(int idx,int dl){
	while (idx <= 5000){
		fen[idx] += dl;
		idx += (idx & (-idx));
	}
}

int get(int idx){
	int s=0;
	while (idx>0){
		s += fen[idx];
		idx -= (idx & (-idx));
	}
	return s;
}
signed main() {
	ios_base::sync_with_stdio(0),cin.tie(NULL),cout.tie(NULL);

	int n;
	cin>>n;

	for (int i = 1; i <= n; i++)
		cin >> a[i],dp[i] = inf,id[a[i]] = i;

	for (int i = 1; i <= n; i++){
		int s = 0;
		for (int l = i; l >= 1; l--){
			upd(id[l],1);
			s += (i - l + 1) - get(id[l]);
			D[l][i] = s;
		}

		for (int l = i; l >= 1; l--)
			upd(id[l],-1);

		int c=0;
		for (int j = 1; j <= n; j++){
			if (a[j] > i) ++c;
			val[j] = c; 
		}

		for (int j = 1; j <= n; j++){
			pr[j] = pr[j - 1] + val[id[j]];
		}

		for (int j = 1; j <= i; j++){
			dp[i] = min(dp[i],dp[i - j] + pr[i] - pr[i - j] + D[i - j + 1][i]);
		}
	}

	cout<<dp[n];
}

Subtask #1
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	348 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	1 ms	2396 KB	Output is correct
4	Correct	1 ms	2396 KB	Output is correct
5	Correct	1 ms	2396 KB	Output is correct
6	Correct	1 ms	2396 KB	Output is correct
7	Correct	1 ms	2396 KB	Output is correct
8	Correct	1 ms	2396 KB	Output is correct
9	Correct	1 ms	2396 KB	Output is correct
10	Correct	1 ms	2648 KB	Output is correct

Subtask #2
7.0 / 7.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	348 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	1 ms	2396 KB	Output is correct
4	Correct	1 ms	2396 KB	Output is correct
5	Correct	1 ms	2396 KB	Output is correct
6	Correct	1 ms	2396 KB	Output is correct
7	Correct	1 ms	2396 KB	Output is correct
8	Correct	1 ms	2396 KB	Output is correct
9	Correct	1 ms	2396 KB	Output is correct
10	Correct	1 ms	2648 KB	Output is correct
11	Correct	1 ms	2396 KB	Output is correct
12	Correct	1 ms	2396 KB	Output is correct
13	Correct	1 ms	2396 KB	Output is correct
14	Correct	1 ms	2396 KB	Output is correct
15	Correct	1 ms	2396 KB	Output is correct
16	Correct	1 ms	2392 KB	Output is correct
17	Correct	1 ms	2396 KB	Output is correct
18	Correct	1 ms	2396 KB	Output is correct
19	Correct	1 ms	2396 KB	Output is correct
20	Correct	1 ms	2396 KB	Output is correct

Subtask #3
32.0 / 32.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	348 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	1 ms	2396 KB	Output is correct
4	Correct	1 ms	2396 KB	Output is correct
5	Correct	1 ms	2396 KB	Output is correct
6	Correct	1 ms	2396 KB	Output is correct
7	Correct	1 ms	2396 KB	Output is correct
8	Correct	1 ms	2396 KB	Output is correct
9	Correct	1 ms	2396 KB	Output is correct
10	Correct	1 ms	2648 KB	Output is correct
11	Correct	1 ms	2396 KB	Output is correct
12	Correct	1 ms	2396 KB	Output is correct
13	Correct	1 ms	2396 KB	Output is correct
14	Correct	1 ms	2396 KB	Output is correct
15	Correct	1 ms	2396 KB	Output is correct
16	Correct	1 ms	2392 KB	Output is correct
17	Correct	1 ms	2396 KB	Output is correct
18	Correct	1 ms	2396 KB	Output is correct
19	Correct	1 ms	2396 KB	Output is correct
20	Correct	1 ms	2396 KB	Output is correct
21	Correct	2 ms	8536 KB	Output is correct
22	Correct	2 ms	8540 KB	Output is correct
23	Correct	2 ms	8540 KB	Output is correct
24	Correct	2 ms	8620 KB	Output is correct
25	Correct	2 ms	8540 KB	Output is correct
26	Correct	2 ms	8540 KB	Output is correct
27	Correct	2 ms	8540 KB	Output is correct
28	Correct	2 ms	8540 KB	Output is correct
29	Correct	2 ms	8540 KB	Output is correct
30	Correct	2 ms	8540 KB	Output is correct

Subtask #4
20.0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	348 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	1 ms	2396 KB	Output is correct
4	Correct	1 ms	2396 KB	Output is correct
5	Correct	1 ms	2396 KB	Output is correct
6	Correct	1 ms	2396 KB	Output is correct
7	Correct	1 ms	2396 KB	Output is correct
8	Correct	1 ms	2396 KB	Output is correct
9	Correct	1 ms	2396 KB	Output is correct
10	Correct	1 ms	2648 KB	Output is correct
11	Correct	1 ms	2396 KB	Output is correct
12	Correct	1 ms	2396 KB	Output is correct
13	Correct	1 ms	2396 KB	Output is correct
14	Correct	1 ms	2396 KB	Output is correct
15	Correct	1 ms	2396 KB	Output is correct
16	Correct	1 ms	2392 KB	Output is correct
17	Correct	1 ms	2396 KB	Output is correct
18	Correct	1 ms	2396 KB	Output is correct
19	Correct	1 ms	2396 KB	Output is correct
20	Correct	1 ms	2396 KB	Output is correct
21	Correct	2 ms	8536 KB	Output is correct
22	Correct	2 ms	8540 KB	Output is correct
23	Correct	2 ms	8540 KB	Output is correct
24	Correct	2 ms	8620 KB	Output is correct
25	Correct	2 ms	8540 KB	Output is correct
26	Correct	2 ms	8540 KB	Output is correct
27	Correct	2 ms	8540 KB	Output is correct
28	Correct	2 ms	8540 KB	Output is correct
29	Correct	2 ms	8540 KB	Output is correct
30	Correct	2 ms	8540 KB	Output is correct
31	Correct	15 ms	33372 KB	Output is correct
32	Correct	14 ms	33372 KB	Output is correct
33	Correct	14 ms	33372 KB	Output is correct
34	Correct	14 ms	33372 KB	Output is correct
35	Correct	14 ms	33236 KB	Output is correct
36	Correct	13 ms	33372 KB	Output is correct
37	Correct	16 ms	33624 KB	Output is correct
38	Correct	14 ms	33368 KB	Output is correct
39	Correct	14 ms	33372 KB	Output is correct
40	Correct	15 ms	33368 KB	Output is correct

Subtask #5
36.0 / 36.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	348 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	1 ms	2396 KB	Output is correct
4	Correct	1 ms	2396 KB	Output is correct
5	Correct	1 ms	2396 KB	Output is correct
6	Correct	1 ms	2396 KB	Output is correct
7	Correct	1 ms	2396 KB	Output is correct
8	Correct	1 ms	2396 KB	Output is correct
9	Correct	1 ms	2396 KB	Output is correct
10	Correct	1 ms	2648 KB	Output is correct
11	Correct	1 ms	2396 KB	Output is correct
12	Correct	1 ms	2396 KB	Output is correct
13	Correct	1 ms	2396 KB	Output is correct
14	Correct	1 ms	2396 KB	Output is correct
15	Correct	1 ms	2396 KB	Output is correct
16	Correct	1 ms	2392 KB	Output is correct
17	Correct	1 ms	2396 KB	Output is correct
18	Correct	1 ms	2396 KB	Output is correct
19	Correct	1 ms	2396 KB	Output is correct
20	Correct	1 ms	2396 KB	Output is correct
21	Correct	2 ms	8536 KB	Output is correct
22	Correct	2 ms	8540 KB	Output is correct
23	Correct	2 ms	8540 KB	Output is correct
24	Correct	2 ms	8620 KB	Output is correct
25	Correct	2 ms	8540 KB	Output is correct
26	Correct	2 ms	8540 KB	Output is correct
27	Correct	2 ms	8540 KB	Output is correct
28	Correct	2 ms	8540 KB	Output is correct
29	Correct	2 ms	8540 KB	Output is correct
30	Correct	2 ms	8540 KB	Output is correct
31	Correct	15 ms	33372 KB	Output is correct
32	Correct	14 ms	33372 KB	Output is correct
33	Correct	14 ms	33372 KB	Output is correct
34	Correct	14 ms	33372 KB	Output is correct
35	Correct	14 ms	33236 KB	Output is correct
36	Correct	13 ms	33372 KB	Output is correct
37	Correct	16 ms	33624 KB	Output is correct
38	Correct	14 ms	33368 KB	Output is correct
39	Correct	14 ms	33372 KB	Output is correct
40	Correct	15 ms	33368 KB	Output is correct
41	Correct	603 ms	195752 KB	Output is correct
42	Correct	593 ms	195672 KB	Output is correct
43	Correct	594 ms	195740 KB	Output is correct
44	Correct	598 ms	195832 KB	Output is correct
45	Correct	599 ms	195912 KB	Output is correct
46	Correct	601 ms	195680 KB	Output is correct
47	Correct	596 ms	195652 KB	Output is correct
48	Correct	616 ms	195684 KB	Output is correct
49	Correct	601 ms	195908 KB	Output is correct
50	Correct	633 ms	195656 KB	Output is correct
51	Correct	602 ms	195668 KB	Output is correct
52	Correct	604 ms	195756 KB	Output is correct
53	Correct	602 ms	196024 KB	Output is correct
54	Correct	600 ms	195932 KB	Output is correct
55	Correct	595 ms	195768 KB	Output is correct

Submission #916743

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