oj.uz

Submission #469174

# Submission time Handle Problem Language Result Execution time Memory
469174 2021-08-31T03:55:51 Z Killer2501 Group Photo (JOI21_ho_t3) C++14
100 / 100
 231 ms 117624 KB 
#include <bits/stdc++.h>
#define ll long long
#define pb push_back
using namespace std;
const int N = 5e3 + 5;
const ll mod = 1e12 + 7;
ll n, m, a[N], b[N], x[N], dp[N], inv[N][N], tong;

void sol()
{
    cin >> n;
    for (int i = 1; i <= n; i++)
    {
        cin >> a[i];
        b[a[i]] = i;
    }
    for (int i = 1; i <= n; i++)
    {
        tong = 0;
        for (int j = i - 1; j > 0; j--)
        {
            if (b[i] < b[j])
                ++tong;
            inv[i][j] = inv[i - 1][j] + tong;
        }
    }
    for (int i = 2; i <= n; i++)
    {
        dp[i] = mod;
        for (int j = i - 1; j >= 0; j--)
        {
            dp[i] = min(dp[i], dp[j] + inv[i][1] - inv[j][1] + (i - j) * (i - j - 1) / 2 - inv[i][j + 1] * 2);
        }
        //cout << dp[i] << " ";
    }
    cout << dp[n];
}
int main()
{
    cin.tie(0);
    cout.tie(0);
    ios_base::sync_with_stdio(0);
    int test = 1;
    //cin >> test;
    while (test-- > 0)
        sol();
    return 0;
}
/*
5
2 1 3 5 4
*/
// ctrl + F8 = compile
// ctrl + F9 = run

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 0 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 0 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 0 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 0 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 1 ms 316 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 332 KB Output is correct

Subtask #3
32.0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 0 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 0 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 1 ms 316 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 332 KB Output is correct
21 Correct 1 ms 1216 KB Output is correct
22 Correct 1 ms 1228 KB Output is correct
23 Correct 1 ms 1228 KB Output is correct
24 Correct 1 ms 1228 KB Output is correct
25 Correct 2 ms 1300 KB Output is correct
26 Correct 1 ms 1228 KB Output is correct
27 Correct 1 ms 1228 KB Output is correct
28 Correct 1 ms 1228 KB Output is correct
29 Correct 1 ms 1228 KB Output is correct
30 Correct 1 ms 1216 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 0 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 0 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 1 ms 316 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 332 KB Output is correct
21 Correct 1 ms 1216 KB Output is correct
22 Correct 1 ms 1228 KB Output is correct
23 Correct 1 ms 1228 KB Output is correct
24 Correct 1 ms 1228 KB Output is correct
25 Correct 2 ms 1300 KB Output is correct
26 Correct 1 ms 1228 KB Output is correct
27 Correct 1 ms 1228 KB Output is correct
28 Correct 1 ms 1228 KB Output is correct
29 Correct 1 ms 1228 KB Output is correct
30 Correct 1 ms 1216 KB Output is correct
31 Correct 6 ms 5964 KB Output is correct
32 Correct 5 ms 6092 KB Output is correct
33 Correct 5 ms 6092 KB Output is correct
34 Correct 5 ms 6092 KB Output is correct
35 Correct 5 ms 6076 KB Output is correct
36 Correct 5 ms 6092 KB Output is correct
37 Correct 5 ms 6092 KB Output is correct
38 Correct 6 ms 6092 KB Output is correct
39 Correct 5 ms 6072 KB Output is correct
40 Correct 5 ms 6108 KB Output is correct

Subtask #5
36.0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 0 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 0 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 1 ms 316 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 332 KB Output is correct
21 Correct 1 ms 1216 KB Output is correct
22 Correct 1 ms 1228 KB Output is correct
23 Correct 1 ms 1228 KB Output is correct
24 Correct 1 ms 1228 KB Output is correct
25 Correct 2 ms 1300 KB Output is correct
26 Correct 1 ms 1228 KB Output is correct
27 Correct 1 ms 1228 KB Output is correct
28 Correct 1 ms 1228 KB Output is correct
29 Correct 1 ms 1228 KB Output is correct
30 Correct 1 ms 1216 KB Output is correct
31 Correct 6 ms 5964 KB Output is correct
32 Correct 5 ms 6092 KB Output is correct
33 Correct 5 ms 6092 KB Output is correct
34 Correct 5 ms 6092 KB Output is correct
35 Correct 5 ms 6076 KB Output is correct
36 Correct 5 ms 6092 KB Output is correct
37 Correct 5 ms 6092 KB Output is correct
38 Correct 6 ms 6092 KB Output is correct
39 Correct 5 ms 6072 KB Output is correct
40 Correct 5 ms 6108 KB Output is correct
41 Correct 222 ms 117432 KB Output is correct
42 Correct 217 ms 117316 KB Output is correct
43 Correct 226 ms 117372 KB Output is correct
44 Correct 221 ms 117512 KB Output is correct
45 Correct 220 ms 117280 KB Output is correct
46 Correct 216 ms 117404 KB Output is correct
47 Correct 223 ms 117624 KB Output is correct
48 Correct 221 ms 117396 KB Output is correct
49 Correct 222 ms 117476 KB Output is correct
50 Correct 222 ms 117572 KB Output is correct
51 Correct 224 ms 117300 KB Output is correct
52 Correct 219 ms 117316 KB Output is correct
53 Correct 231 ms 117520 KB Output is correct
54 Correct 219 ms 117460 KB Output is correct
55 Correct 223 ms 117380 KB Output is correct