oj.uz

Submission #534461

# Submission time Handle Problem Language Result Execution time Memory
534461 2022-03-08T07:33:04 Z someone Group Photo (JOI21_ho_t3) C++14
100 / 100
 419 ms 197848 KB 
#include <bits/stdc++.h>
#define int long long
using namespace std;

const int N = 5e3 + 42, INF = 1e18;

int n, a[N], pos[N], val[N], inv[N][N];

signed main() {
    ios::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    
    cin >> n;
    for(int i = 0; i < n; i++)
        cin >> a[i];
    for(int i = 0; i < n; i++)
        pos[a[i]-1] = i;
    for(int i = 0; i < n; i++)
        for(int j = i+1; j < n; j++)
            if(pos[i] > pos[j])
                inv[i+1][j+1] = 1;
    
    for(int i = 1; i <= n; i++)
        for(int j = 1; j <= n; j++)
            inv[i][j] += inv[i-1][j] + inv[i][j-1] - inv[i-1][j-1];
    
    for(int i = 1; i <= n; i++)
        val[i] = INF;
    for(int i = 0; i < n; i++) {
        for(int j = i+1; j <= n; j++) {
            val[j] = min(val[j], val[i] + ((j-i)*(j-i-1))/2 - 2 * (inv[j][j] + inv[i][i] - inv[i][j] - inv[j][i]));
        }
    }
    cout << inv[n][n] + val[n];
}

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 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 0 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 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 0 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 324 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 360 KB Output is correct
14 Correct 1 ms 332 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 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 0 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 324 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 360 KB Output is correct
14 Correct 1 ms 332 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 1348 KB Output is correct
22 Correct 2 ms 1356 KB Output is correct
23 Correct 2 ms 1356 KB Output is correct
24 Correct 1 ms 1356 KB Output is correct
25 Correct 1 ms 1356 KB Output is correct
26 Correct 1 ms 1356 KB Output is correct
27 Correct 1 ms 1356 KB Output is correct
28 Correct 2 ms 1356 KB Output is correct
29 Correct 1 ms 1356 KB Output is correct
30 Correct 1 ms 1356 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 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 0 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 324 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 360 KB Output is correct
14 Correct 1 ms 332 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 1348 KB Output is correct
22 Correct 2 ms 1356 KB Output is correct
23 Correct 2 ms 1356 KB Output is correct
24 Correct 1 ms 1356 KB Output is correct
25 Correct 1 ms 1356 KB Output is correct
26 Correct 1 ms 1356 KB Output is correct
27 Correct 1 ms 1356 KB Output is correct
28 Correct 2 ms 1356 KB Output is correct
29 Correct 1 ms 1356 KB Output is correct
30 Correct 1 ms 1356 KB Output is correct
31 Correct 13 ms 8504 KB Output is correct
32 Correct 11 ms 8520 KB Output is correct
33 Correct 11 ms 8552 KB Output is correct
34 Correct 14 ms 8524 KB Output is correct
35 Correct 12 ms 8512 KB Output is correct
36 Correct 12 ms 8512 KB Output is correct
37 Correct 11 ms 8524 KB Output is correct
38 Correct 13 ms 8624 KB Output is correct
39 Correct 10 ms 8524 KB Output is correct
40 Correct 11 ms 8524 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 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 0 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 324 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 360 KB Output is correct
14 Correct 1 ms 332 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 1348 KB Output is correct
22 Correct 2 ms 1356 KB Output is correct
23 Correct 2 ms 1356 KB Output is correct
24 Correct 1 ms 1356 KB Output is correct
25 Correct 1 ms 1356 KB Output is correct
26 Correct 1 ms 1356 KB Output is correct
27 Correct 1 ms 1356 KB Output is correct
28 Correct 2 ms 1356 KB Output is correct
29 Correct 1 ms 1356 KB Output is correct
30 Correct 1 ms 1356 KB Output is correct
31 Correct 13 ms 8504 KB Output is correct
32 Correct 11 ms 8520 KB Output is correct
33 Correct 11 ms 8552 KB Output is correct
34 Correct 14 ms 8524 KB Output is correct
35 Correct 12 ms 8512 KB Output is correct
36 Correct 12 ms 8512 KB Output is correct
37 Correct 11 ms 8524 KB Output is correct
38 Correct 13 ms 8624 KB Output is correct
39 Correct 10 ms 8524 KB Output is correct
40 Correct 11 ms 8524 KB Output is correct
41 Correct 409 ms 197660 KB Output is correct
42 Correct 409 ms 197704 KB Output is correct
43 Correct 400 ms 197748 KB Output is correct
44 Correct 376 ms 197740 KB Output is correct
45 Correct 419 ms 197700 KB Output is correct
46 Correct 385 ms 197780 KB Output is correct
47 Correct 392 ms 197780 KB Output is correct
48 Correct 401 ms 197848 KB Output is correct
49 Correct 372 ms 197772 KB Output is correct
50 Correct 417 ms 197688 KB Output is correct
51 Correct 385 ms 197700 KB Output is correct
52 Correct 385 ms 197700 KB Output is correct
53 Correct 387 ms 197748 KB Output is correct
54 Correct 416 ms 197780 KB Output is correct
55 Correct 375 ms 197780 KB Output is correct