oj.uz

Submission #637634

# Submission time Handle Problem Language Result Execution time Memory
637634 2022-09-02T13:44:00 Z danikoynov Group Photo (JOI21_ho_t3) C++14
100 / 100
 639 ms 196636 KB 
/**
 ____ ____ ____ ____ ____ ____
||l |||e |||i |||n |||a |||d ||
||__|||__|||__|||__|||__|||__||
|/__\|/__\|/__\|/__\|/__\|/__\|

**/

#include<bits/stdc++.h>
#define endl '\n'

using namespace std;
typedef long long ll;

void speed()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
}

const int maxn = 5010;

int n, a[maxn], dp[maxn], pos[maxn], cnt[maxn][maxn], par[maxn][maxn];
void solve()
{
    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] + cnt[i][j - 1] - cnt[i - 1][j - 1];
        if (pos[i] == j)
            cnt[i][j] ++;
    }

    for (int i = 1; i <= n; i ++)
        for (int j = 1; j <= n; j ++)
        par[i][j] = par[i][j - 1] + cnt[i][pos[j]];

    /**for (int i = 1; i <= n; i ++, cout << endl)
        for (int j = 1; j <= n; j ++)
        cout << cnt[i][j] << " ";*/
    for (int i = 1; i <= n; i ++)
    {
        dp[i] = n * n;

        int all = 0;
        for (int k = i; k > 0; k --)
            all += (cnt[n][pos[k]] - cnt[i][pos[k]]) + cnt[k - 1][pos[k]];
        for (int j = 0; j < i; j ++)
        {
            if (j > 0)
                all -= ((cnt[n][pos[j]] - cnt[i][pos[j]]) + cnt[j - 1][pos[j]]);
            int sum =  - (par[j][i] - par[j][j]);
            /**for (int k = i; k > j; k --)
            {
                ///ll cur = pos[k] + (j + (i - k) - query(pos[k] - 1));
                ll cur = - cnt[j][pos[k]];

                ///cout << i << " : " << j << " : " << k << " " << cnt[n][pos[k]] << " " << cnt[k][pos[k]] << endl;
                //cur -= st;
                //st ++;
                sum = sum + cur;
            }*/

            ///cout << i << " " << j << " " << sum << endl;
            dp[i] = min(dp[i], dp[j] + sum + all);

        }

        ///cout << i << " -- " << dp[i] << endl;

    }
    cout << dp[n] << endl;

}

int main()
{
    solve();
    return 0;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 0 ms 468 KB Output is correct
12 Correct 0 ms 468 KB Output is correct
13 Correct 1 ms 468 KB Output is correct
14 Correct 1 ms 468 KB Output is correct
15 Correct 0 ms 468 KB Output is correct
16 Correct 0 ms 468 KB Output is correct
17 Correct 0 ms 468 KB Output is correct
18 Correct 0 ms 468 KB Output is correct
19 Correct 1 ms 468 KB Output is correct
20 Correct 0 ms 468 KB Output is correct

Subtask #3
32.0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 0 ms 468 KB Output is correct
12 Correct 0 ms 468 KB Output is correct
13 Correct 1 ms 468 KB Output is correct
14 Correct 1 ms 468 KB Output is correct
15 Correct 0 ms 468 KB Output is correct
16 Correct 0 ms 468 KB Output is correct
17 Correct 0 ms 468 KB Output is correct
18 Correct 0 ms 468 KB Output is correct
19 Correct 1 ms 468 KB Output is correct
20 Correct 0 ms 468 KB Output is correct
21 Correct 2 ms 2132 KB Output is correct
22 Correct 2 ms 2260 KB Output is correct
23 Correct 2 ms 2260 KB Output is correct
24 Correct 2 ms 2260 KB Output is correct
25 Correct 2 ms 2260 KB Output is correct
26 Correct 2 ms 2260 KB Output is correct
27 Correct 2 ms 2260 KB Output is correct
28 Correct 2 ms 2260 KB Output is correct
29 Correct 2 ms 2260 KB Output is correct
30 Correct 2 ms 2260 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 0 ms 468 KB Output is correct
12 Correct 0 ms 468 KB Output is correct
13 Correct 1 ms 468 KB Output is correct
14 Correct 1 ms 468 KB Output is correct
15 Correct 0 ms 468 KB Output is correct
16 Correct 0 ms 468 KB Output is correct
17 Correct 0 ms 468 KB Output is correct
18 Correct 0 ms 468 KB Output is correct
19 Correct 1 ms 468 KB Output is correct
20 Correct 0 ms 468 KB Output is correct
21 Correct 2 ms 2132 KB Output is correct
22 Correct 2 ms 2260 KB Output is correct
23 Correct 2 ms 2260 KB Output is correct
24 Correct 2 ms 2260 KB Output is correct
25 Correct 2 ms 2260 KB Output is correct
26 Correct 2 ms 2260 KB Output is correct
27 Correct 2 ms 2260 KB Output is correct
28 Correct 2 ms 2260 KB Output is correct
29 Correct 2 ms 2260 KB Output is correct
30 Correct 2 ms 2260 KB Output is correct
31 Correct 14 ms 11648 KB Output is correct
32 Correct 14 ms 11740 KB Output is correct
33 Correct 14 ms 11720 KB Output is correct
34 Correct 14 ms 11720 KB Output is correct
35 Correct 15 ms 11732 KB Output is correct
36 Correct 18 ms 11732 KB Output is correct
37 Correct 15 ms 11696 KB Output is correct
38 Correct 15 ms 11740 KB Output is correct
39 Correct 16 ms 11732 KB Output is correct
40 Correct 14 ms 11764 KB Output is correct

Subtask #5
36.0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 0 ms 468 KB Output is correct
12 Correct 0 ms 468 KB Output is correct
13 Correct 1 ms 468 KB Output is correct
14 Correct 1 ms 468 KB Output is correct
15 Correct 0 ms 468 KB Output is correct
16 Correct 0 ms 468 KB Output is correct
17 Correct 0 ms 468 KB Output is correct
18 Correct 0 ms 468 KB Output is correct
19 Correct 1 ms 468 KB Output is correct
20 Correct 0 ms 468 KB Output is correct
21 Correct 2 ms 2132 KB Output is correct
22 Correct 2 ms 2260 KB Output is correct
23 Correct 2 ms 2260 KB Output is correct
24 Correct 2 ms 2260 KB Output is correct
25 Correct 2 ms 2260 KB Output is correct
26 Correct 2 ms 2260 KB Output is correct
27 Correct 2 ms 2260 KB Output is correct
28 Correct 2 ms 2260 KB Output is correct
29 Correct 2 ms 2260 KB Output is correct
30 Correct 2 ms 2260 KB Output is correct
31 Correct 14 ms 11648 KB Output is correct
32 Correct 14 ms 11740 KB Output is correct
33 Correct 14 ms 11720 KB Output is correct
34 Correct 14 ms 11720 KB Output is correct
35 Correct 15 ms 11732 KB Output is correct
36 Correct 18 ms 11732 KB Output is correct
37 Correct 15 ms 11696 KB Output is correct
38 Correct 15 ms 11740 KB Output is correct
39 Correct 16 ms 11732 KB Output is correct
40 Correct 14 ms 11764 KB Output is correct
41 Correct 578 ms 196444 KB Output is correct
42 Correct 616 ms 196504 KB Output is correct
43 Correct 581 ms 196456 KB Output is correct
44 Correct 595 ms 196496 KB Output is correct
45 Correct 584 ms 196452 KB Output is correct
46 Correct 585 ms 196500 KB Output is correct
47 Correct 639 ms 196576 KB Output is correct
48 Correct 584 ms 196556 KB Output is correct
49 Correct 601 ms 196636 KB Output is correct
50 Correct 595 ms 196452 KB Output is correct
51 Correct 560 ms 196560 KB Output is correct
52 Correct 616 ms 196552 KB Output is correct
53 Correct 597 ms 196476 KB Output is correct
54 Correct 586 ms 196476 KB Output is correct
55 Correct 583 ms 196428 KB Output is correct