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Submission #1038888

# Submission time Handle Problem Language Result Execution time Memory
1038888 2024-07-30T08:41:44 Z Otalp Group Photo (JOI21_ho_t3) C++14
100 / 100
 250 ms 98344 KB 
#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define pii pair<int, int>
#define pb push_back
#define ff first
#define ss second

int a[5001];
int cnt[5001][5001];
int dp[5001];
int ddp[5001];
int pos[200100];


void solve(){
    int n;
    cin>>n;
    for(int i=1; i<=n; i++){
        cin>>a[i];
        pos[a[i]] = i;
    }
    for(int i=1; i<=n; i++){
        for(int j=1; j<=n; j++){
            cnt[i][j] = cnt[i-1][j] + (a[i] >= j ?1 :0);
        }
    }
    for(int i=1; i<=n; i++){
        int sum = 0;
        dp[i] = 1e9;
        for(int j=i; j>=1; j--){
            sum += cnt[pos[j]-1][i+1];
            sum += (cnt[n][j] - cnt[n][i+1]) - (cnt[pos[j]][j] - cnt[pos[j]][i+1]);
            dp[i] = min(dp[i], sum + dp[j-1]);
        }
        //cout<<dp[i]<<' ';
    }
    cout<<dp[n];

            


}

signed main(){
    solve();
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 600 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 0 ms 344 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 600 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 0 ms 344 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 344 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 1 ms 344 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct

Subtask #3
32.0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 600 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 0 ms 344 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 344 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 1 ms 344 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 1 ms 4696 KB Output is correct
22 Correct 1 ms 4796 KB Output is correct
23 Correct 1 ms 2908 KB Output is correct
24 Correct 1 ms 4700 KB Output is correct
25 Correct 1 ms 2908 KB Output is correct
26 Correct 1 ms 4696 KB Output is correct
27 Correct 1 ms 4700 KB Output is correct
28 Correct 1 ms 4700 KB Output is correct
29 Correct 1 ms 4696 KB Output is correct
30 Correct 1 ms 4700 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 600 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 0 ms 344 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 344 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 1 ms 344 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 1 ms 4696 KB Output is correct
22 Correct 1 ms 4796 KB Output is correct
23 Correct 1 ms 2908 KB Output is correct
24 Correct 1 ms 4700 KB Output is correct
25 Correct 1 ms 2908 KB Output is correct
26 Correct 1 ms 4696 KB Output is correct
27 Correct 1 ms 4700 KB Output is correct
28 Correct 1 ms 4700 KB Output is correct
29 Correct 1 ms 4696 KB Output is correct
30 Correct 1 ms 4700 KB Output is correct
31 Correct 4 ms 8540 KB Output is correct
32 Correct 4 ms 8540 KB Output is correct
33 Correct 4 ms 5976 KB Output is correct
34 Correct 4 ms 5980 KB Output is correct
35 Correct 5 ms 7260 KB Output is correct
36 Correct 5 ms 8796 KB Output is correct
37 Correct 4 ms 9916 KB Output is correct
38 Correct 4 ms 10044 KB Output is correct
39 Correct 3 ms 10076 KB Output is correct
40 Correct 3 ms 10076 KB Output is correct

Subtask #5
36.0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 600 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 0 ms 344 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 344 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 1 ms 344 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 1 ms 4696 KB Output is correct
22 Correct 1 ms 4796 KB Output is correct
23 Correct 1 ms 2908 KB Output is correct
24 Correct 1 ms 4700 KB Output is correct
25 Correct 1 ms 2908 KB Output is correct
26 Correct 1 ms 4696 KB Output is correct
27 Correct 1 ms 4700 KB Output is correct
28 Correct 1 ms 4700 KB Output is correct
29 Correct 1 ms 4696 KB Output is correct
30 Correct 1 ms 4700 KB Output is correct
31 Correct 4 ms 8540 KB Output is correct
32 Correct 4 ms 8540 KB Output is correct
33 Correct 4 ms 5976 KB Output is correct
34 Correct 4 ms 5980 KB Output is correct
35 Correct 5 ms 7260 KB Output is correct
36 Correct 5 ms 8796 KB Output is correct
37 Correct 4 ms 9916 KB Output is correct
38 Correct 4 ms 10044 KB Output is correct
39 Correct 3 ms 10076 KB Output is correct
40 Correct 3 ms 10076 KB Output is correct
41 Correct 219 ms 98312 KB Output is correct
42 Correct 250 ms 98128 KB Output is correct
43 Correct 180 ms 98136 KB Output is correct
44 Correct 224 ms 98332 KB Output is correct
45 Correct 217 ms 98216 KB Output is correct
46 Correct 185 ms 98332 KB Output is correct
47 Correct 237 ms 98340 KB Output is correct
48 Correct 227 ms 98136 KB Output is correct
49 Correct 209 ms 98260 KB Output is correct
50 Correct 201 ms 98304 KB Output is correct
51 Correct 210 ms 98344 KB Output is correct
52 Correct 208 ms 98132 KB Output is correct
53 Correct 197 ms 98164 KB Output is correct
54 Correct 209 ms 98192 KB Output is correct
55 Correct 208 ms 98144 KB Output is correct