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Submission #961131

# Submission time Handle Problem Language Result Execution time Memory
961131 2024-04-11T14:19:59 Z happy_node Group Photo (JOI21_ho_t3) C++17
100 / 100
 936 ms 196732 KB 
#include <bits/stdc++.h>
using namespace std;

const int MX=5005;

int N;
int H[MX], dp[MX], cnt[MX][MX], curCnt[MX], pos[MX], sum[MX][MX], diag[MX];

int main() {
	cin.tie(0); ios_base::sync_with_stdio(0);

	cin>>N;
	for(int i=1;i<=N;i++) cin>>H[i];

	for(int i=1;i<=N;i++) dp[i]=1e9;

	for(int i=1;i<=N;i++) {
		for(int j=H[i];j<=N;j++) curCnt[j]++;
		for(int j=1;j<=N;j++) cnt[H[i]][j]=curCnt[j];
	}

	for(int j=1;j<=N;j++) {
		for(int i=1;i<=N;i++) {
			sum[i][j]+=sum[i-1][j];
			sum[i][j]+=cnt[i][j];
		}
	}

	for(int j=1;j<=N;j++) {
		diag[j]+=diag[j-1];
		diag[j]+=cnt[j][j-1];
	}

	for(int i=0;i<=N;i++) {
		for(int k=i+1;k<=N;k++) {
			int cost=0;
			cost+=sum[k][N]-sum[i][N];
			cost-=sum[k][k]-sum[i][k];
			cost-=sum[k][i]-sum[i][i];
			cost+=diag[k]-diag[i];
			dp[k]=min(dp[k],dp[i]+cost);
		}
	}

	cout<<dp[N]<<'\n';
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 1 ms 2552 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 2396 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 1 ms 2552 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 2396 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 2396 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 1 ms 2392 KB Output is correct
2 Correct 1 ms 2552 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 2396 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 2396 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 3 ms 7512 KB Output is correct
22 Correct 2 ms 7516 KB Output is correct
23 Correct 2 ms 7516 KB Output is correct
24 Correct 2 ms 7516 KB Output is correct
25 Correct 3 ms 7516 KB Output is correct
26 Correct 2 ms 7516 KB Output is correct
27 Correct 2 ms 7512 KB Output is correct
28 Correct 2 ms 7516 KB Output is correct
29 Correct 2 ms 7516 KB Output is correct
30 Correct 2 ms 7516 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 1 ms 2552 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 2396 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 2396 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 3 ms 7512 KB Output is correct
22 Correct 2 ms 7516 KB Output is correct
23 Correct 2 ms 7516 KB Output is correct
24 Correct 2 ms 7516 KB Output is correct
25 Correct 3 ms 7516 KB Output is correct
26 Correct 2 ms 7516 KB Output is correct
27 Correct 2 ms 7512 KB Output is correct
28 Correct 2 ms 7516 KB Output is correct
29 Correct 2 ms 7516 KB Output is correct
30 Correct 2 ms 7516 KB Output is correct
31 Correct 16 ms 24660 KB Output is correct
32 Correct 11 ms 24668 KB Output is correct
33 Correct 11 ms 24668 KB Output is correct
34 Correct 11 ms 24668 KB Output is correct
35 Correct 12 ms 24668 KB Output is correct
36 Correct 12 ms 24668 KB Output is correct
37 Correct 11 ms 24672 KB Output is correct
38 Correct 10 ms 24552 KB Output is correct
39 Correct 11 ms 24668 KB Output is correct
40 Correct 11 ms 24668 KB Output is correct

Subtask #5
36.0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 1 ms 2552 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 2396 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 2396 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 3 ms 7512 KB Output is correct
22 Correct 2 ms 7516 KB Output is correct
23 Correct 2 ms 7516 KB Output is correct
24 Correct 2 ms 7516 KB Output is correct
25 Correct 3 ms 7516 KB Output is correct
26 Correct 2 ms 7516 KB Output is correct
27 Correct 2 ms 7512 KB Output is correct
28 Correct 2 ms 7516 KB Output is correct
29 Correct 2 ms 7516 KB Output is correct
30 Correct 2 ms 7516 KB Output is correct
31 Correct 16 ms 24660 KB Output is correct
32 Correct 11 ms 24668 KB Output is correct
33 Correct 11 ms 24668 KB Output is correct
34 Correct 11 ms 24668 KB Output is correct
35 Correct 12 ms 24668 KB Output is correct
36 Correct 12 ms 24668 KB Output is correct
37 Correct 11 ms 24672 KB Output is correct
38 Correct 10 ms 24552 KB Output is correct
39 Correct 11 ms 24668 KB Output is correct
40 Correct 11 ms 24668 KB Output is correct
41 Correct 883 ms 196276 KB Output is correct
42 Correct 918 ms 196512 KB Output is correct
43 Correct 936 ms 196384 KB Output is correct
44 Correct 889 ms 196532 KB Output is correct
45 Correct 901 ms 196584 KB Output is correct
46 Correct 855 ms 196484 KB Output is correct
47 Correct 834 ms 196376 KB Output is correct
48 Correct 855 ms 196552 KB Output is correct
49 Correct 861 ms 196348 KB Output is correct
50 Correct 873 ms 196552 KB Output is correct
51 Correct 892 ms 196692 KB Output is correct
52 Correct 903 ms 196560 KB Output is correct
53 Correct 873 ms 196732 KB Output is correct
54 Correct 873 ms 196548 KB Output is correct
55 Correct 892 ms 196552 KB Output is correct