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Submission #1000153

# Submission time Handle Problem Language Result Execution time Memory
1000153 2024-06-16T18:11:03 Z DobromirAngelov Group Photo (JOI21_ho_t3) C++14
100 / 100
 312 ms 98648 KB 
#include<bits/stdc++.h>
#define endl '\n'

using namespace std;

const int MAXN=5e3+5;

int n;
int a[MAXN];
int cnt[MAXN][MAXN];
int dp[MAXN];

int 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=i+1;j<=n;j++) cnt[a[j]][a[i]]++;
}
for(int i=1;i<=n;i++)
{
    for(int j=i-1;j>=1;j--) cnt[i][j]+=cnt[i][j+1];
}
for(int j=1;j<=n;j++)
{
    for(int i=j+1;i<=n;i++) cnt[i][j]+=cnt[i-1][j];
}
for(int i=1;i<=n;i++)
{
    for(int j=n;j>i;j--) cnt[i][j]+=cnt[i][j+1];
}
for(int j=n;j>=1;j--)
{
    for(int i=1;i<j;i++) cnt[i][j]+=cnt[i-1][j];
}

dp[n+1]=0;
for(int i=n;i>=1;i--)
{
    dp[i]=1e9;
    for(int j=i;j<=n;j++)
    {
        dp[i]=min(dp[i], (cnt[j][i]-cnt[i][i])+(cnt[j][j+1]-cnt[i-1][j+1])+dp[j+1]);
    }
}

cout<<dp[1]<<endl;

return 0;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 2544 KB Output is correct
8 Correct 0 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 0 ms 2396 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 2544 KB Output is correct
8 Correct 0 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 0 ms 2396 KB Output is correct
11 Correct 0 ms 2392 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 0 ms 2396 KB Output is correct
14 Correct 0 ms 2396 KB Output is correct
15 Correct 0 ms 2396 KB Output is correct
16 Correct 0 ms 2396 KB Output is correct
17 Correct 1 ms 2396 KB Output is correct
18 Correct 0 ms 2396 KB Output is correct
19 Correct 0 ms 2396 KB Output is correct
20 Correct 0 ms 2396 KB Output is correct

Subtask #3
32.0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 2544 KB Output is correct
8 Correct 0 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 0 ms 2396 KB Output is correct
11 Correct 0 ms 2392 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 0 ms 2396 KB Output is correct
14 Correct 0 ms 2396 KB Output is correct
15 Correct 0 ms 2396 KB Output is correct
16 Correct 0 ms 2396 KB Output is correct
17 Correct 1 ms 2396 KB Output is correct
18 Correct 0 ms 2396 KB Output is correct
19 Correct 0 ms 2396 KB Output is correct
20 Correct 0 ms 2396 KB Output is correct
21 Correct 1 ms 4444 KB Output is correct
22 Correct 1 ms 4444 KB Output is correct
23 Correct 1 ms 4444 KB Output is correct
24 Correct 1 ms 4444 KB Output is correct
25 Correct 1 ms 4440 KB Output is correct
26 Correct 1 ms 4444 KB Output is correct
27 Correct 1 ms 4444 KB Output is correct
28 Correct 1 ms 4560 KB Output is correct
29 Correct 1 ms 4444 KB Output is correct
30 Correct 1 ms 4444 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 2544 KB Output is correct
8 Correct 0 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 0 ms 2396 KB Output is correct
11 Correct 0 ms 2392 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 0 ms 2396 KB Output is correct
14 Correct 0 ms 2396 KB Output is correct
15 Correct 0 ms 2396 KB Output is correct
16 Correct 0 ms 2396 KB Output is correct
17 Correct 1 ms 2396 KB Output is correct
18 Correct 0 ms 2396 KB Output is correct
19 Correct 0 ms 2396 KB Output is correct
20 Correct 0 ms 2396 KB Output is correct
21 Correct 1 ms 4444 KB Output is correct
22 Correct 1 ms 4444 KB Output is correct
23 Correct 1 ms 4444 KB Output is correct
24 Correct 1 ms 4444 KB Output is correct
25 Correct 1 ms 4440 KB Output is correct
26 Correct 1 ms 4444 KB Output is correct
27 Correct 1 ms 4444 KB Output is correct
28 Correct 1 ms 4560 KB Output is correct
29 Correct 1 ms 4444 KB Output is correct
30 Correct 1 ms 4444 KB Output is correct
31 Correct 4 ms 15452 KB Output is correct
32 Correct 3 ms 15580 KB Output is correct
33 Correct 3 ms 15452 KB Output is correct
34 Correct 4 ms 14304 KB Output is correct
35 Correct 4 ms 15452 KB Output is correct
36 Correct 3 ms 16732 KB Output is correct
37 Correct 4 ms 16952 KB Output is correct
38 Correct 4 ms 16732 KB Output is correct
39 Correct 4 ms 16732 KB Output is correct
40 Correct 3 ms 16732 KB Output is correct

Subtask #5
36.0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 2544 KB Output is correct
8 Correct 0 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 0 ms 2396 KB Output is correct
11 Correct 0 ms 2392 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 0 ms 2396 KB Output is correct
14 Correct 0 ms 2396 KB Output is correct
15 Correct 0 ms 2396 KB Output is correct
16 Correct 0 ms 2396 KB Output is correct
17 Correct 1 ms 2396 KB Output is correct
18 Correct 0 ms 2396 KB Output is correct
19 Correct 0 ms 2396 KB Output is correct
20 Correct 0 ms 2396 KB Output is correct
21 Correct 1 ms 4444 KB Output is correct
22 Correct 1 ms 4444 KB Output is correct
23 Correct 1 ms 4444 KB Output is correct
24 Correct 1 ms 4444 KB Output is correct
25 Correct 1 ms 4440 KB Output is correct
26 Correct 1 ms 4444 KB Output is correct
27 Correct 1 ms 4444 KB Output is correct
28 Correct 1 ms 4560 KB Output is correct
29 Correct 1 ms 4444 KB Output is correct
30 Correct 1 ms 4444 KB Output is correct
31 Correct 4 ms 15452 KB Output is correct
32 Correct 3 ms 15580 KB Output is correct
33 Correct 3 ms 15452 KB Output is correct
34 Correct 4 ms 14304 KB Output is correct
35 Correct 4 ms 15452 KB Output is correct
36 Correct 3 ms 16732 KB Output is correct
37 Correct 4 ms 16952 KB Output is correct
38 Correct 4 ms 16732 KB Output is correct
39 Correct 4 ms 16732 KB Output is correct
40 Correct 3 ms 16732 KB Output is correct
41 Correct 296 ms 98380 KB Output is correct
42 Correct 294 ms 98396 KB Output is correct
43 Correct 305 ms 98396 KB Output is correct
44 Correct 293 ms 98388 KB Output is correct
45 Correct 304 ms 98640 KB Output is correct
46 Correct 289 ms 98384 KB Output is correct
47 Correct 297 ms 98388 KB Output is correct
48 Correct 288 ms 98648 KB Output is correct
49 Correct 291 ms 98412 KB Output is correct
50 Correct 296 ms 98384 KB Output is correct
51 Correct 292 ms 98412 KB Output is correct
52 Correct 301 ms 98644 KB Output is correct
53 Correct 288 ms 98388 KB Output is correct
54 Correct 312 ms 98432 KB Output is correct
55 Correct 289 ms 98408 KB Output is correct