oj.uz

Submission #879014

# Submission time Handle Problem Language Result Execution time Memory
879014 2023-11-26T06:00:44 Z frostray8653 Group Photo (JOI21_ho_t3) C++17
100 / 100
 525 ms 392576 KB 
#include <bits/stdc++.h>
#define int long long
#define IO ios::sync_with_stdio(0), cin.tie(0);
#define FOR(i, a, b) for (int i = a; i <= b; i++)
using namespace std;
using pii = pair<int, int>;
void dbg() {;}
template<class T, class ...U>
void dbg(T a, U ...b) { cout << a << " "; dbg(b...); }
void ent() { cout << "\n"; }
const int INF = 1e16;
const int N = 5005;

int a[N], pos[N];
int cnt[2][N][N];
int dp[N];

signed main() {
    IO;

    int n;
    cin >> n;
    FOR(i, 1, n) {
        cin >> a[i];
        pos[a[i]] = i;
    }
    FOR(i, 1, n) {
        int x = pos[i];
        for (int j = 1; j <= n; j++) {
            cnt[0][i][j] = cnt[0][i - 1][j] + cnt[0][i][j - 1] - cnt[0][i - 1][j - 1];
            cnt[0][i][j] += (j == x);
        }
        for (int j = n; j >= 1; j--) {
            cnt[1][i][j] = cnt[1][i - 1][j] + cnt[1][i][j + 1] - cnt[1][i - 1][j + 1];
            cnt[1][i][j] += (j == x);
        }
    }
    // FOR(i, 1, n) {
    //     FOR(j, 1, n) dbg(cnt[1][i][j]);
    //     ent();
    // }

    fill(dp, dp + N, INF);
    dp[0] = 0;
    FOR(l, 1, n) {
        int cst = 0;
        FOR(r, l, n) {
            cst += cnt[1][l - 1][pos[r]] + (cnt[0][r - 1][pos[r]] - cnt[0][l - 1][pos[r]]);
            dp[r] = min(dp[r], dp[l - 1] + cst);
        }
        cst = 0;
        FOR(r, l, n) {
            cst += cnt[1][r - 1][pos[r]];
            dp[r] = min(dp[r], dp[l - 1] + cst);
        }
    }
    cout << dp[n] << "\n";

    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 0 ms 348 KB Output is correct
3 Correct 0 ms 460 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 420 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 1 ms 348 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 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 460 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 420 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 1 ms 348 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 604 KB Output is correct
12 Correct 0 ms 604 KB Output is correct
13 Correct 0 ms 604 KB Output is correct
14 Correct 0 ms 604 KB Output is correct
15 Correct 0 ms 604 KB Output is correct
16 Correct 1 ms 604 KB Output is correct
17 Correct 0 ms 604 KB Output is correct
18 Correct 0 ms 604 KB Output is correct
19 Correct 1 ms 600 KB Output is correct
20 Correct 0 ms 604 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 0 ms 348 KB Output is correct
3 Correct 0 ms 460 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 420 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 1 ms 348 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 604 KB Output is correct
12 Correct 0 ms 604 KB Output is correct
13 Correct 0 ms 604 KB Output is correct
14 Correct 0 ms 604 KB Output is correct
15 Correct 0 ms 604 KB Output is correct
16 Correct 1 ms 604 KB Output is correct
17 Correct 0 ms 604 KB Output is correct
18 Correct 0 ms 604 KB Output is correct
19 Correct 1 ms 600 KB Output is correct
20 Correct 0 ms 604 KB Output is correct
21 Correct 2 ms 2652 KB Output is correct
22 Correct 2 ms 2652 KB Output is correct
23 Correct 2 ms 2652 KB Output is correct
24 Correct 2 ms 2652 KB Output is correct
25 Correct 1 ms 2652 KB Output is correct
26 Correct 1 ms 2652 KB Output is correct
27 Correct 1 ms 2772 KB Output is correct
28 Correct 2 ms 2648 KB Output is correct
29 Correct 2 ms 2772 KB Output is correct
30 Correct 1 ms 2652 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 0 ms 348 KB Output is correct
3 Correct 0 ms 460 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 420 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 1 ms 348 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 604 KB Output is correct
12 Correct 0 ms 604 KB Output is correct
13 Correct 0 ms 604 KB Output is correct
14 Correct 0 ms 604 KB Output is correct
15 Correct 0 ms 604 KB Output is correct
16 Correct 1 ms 604 KB Output is correct
17 Correct 0 ms 604 KB Output is correct
18 Correct 0 ms 604 KB Output is correct
19 Correct 1 ms 600 KB Output is correct
20 Correct 0 ms 604 KB Output is correct
21 Correct 2 ms 2652 KB Output is correct
22 Correct 2 ms 2652 KB Output is correct
23 Correct 2 ms 2652 KB Output is correct
24 Correct 2 ms 2652 KB Output is correct
25 Correct 1 ms 2652 KB Output is correct
26 Correct 1 ms 2652 KB Output is correct
27 Correct 1 ms 2772 KB Output is correct
28 Correct 2 ms 2648 KB Output is correct
29 Correct 2 ms 2772 KB Output is correct
30 Correct 1 ms 2652 KB Output is correct
31 Correct 12 ms 19804 KB Output is correct
32 Correct 12 ms 19804 KB Output is correct
33 Correct 13 ms 20040 KB Output is correct
34 Correct 14 ms 20060 KB Output is correct
35 Correct 13 ms 20060 KB Output is correct
36 Correct 15 ms 19884 KB Output is correct
37 Correct 15 ms 19896 KB Output is correct
38 Correct 15 ms 20060 KB Output is correct
39 Correct 13 ms 20072 KB Output is correct
40 Correct 13 ms 20056 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 0 ms 348 KB Output is correct
3 Correct 0 ms 460 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 420 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 1 ms 348 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 604 KB Output is correct
12 Correct 0 ms 604 KB Output is correct
13 Correct 0 ms 604 KB Output is correct
14 Correct 0 ms 604 KB Output is correct
15 Correct 0 ms 604 KB Output is correct
16 Correct 1 ms 604 KB Output is correct
17 Correct 0 ms 604 KB Output is correct
18 Correct 0 ms 604 KB Output is correct
19 Correct 1 ms 600 KB Output is correct
20 Correct 0 ms 604 KB Output is correct
21 Correct 2 ms 2652 KB Output is correct
22 Correct 2 ms 2652 KB Output is correct
23 Correct 2 ms 2652 KB Output is correct
24 Correct 2 ms 2652 KB Output is correct
25 Correct 1 ms 2652 KB Output is correct
26 Correct 1 ms 2652 KB Output is correct
27 Correct 1 ms 2772 KB Output is correct
28 Correct 2 ms 2648 KB Output is correct
29 Correct 2 ms 2772 KB Output is correct
30 Correct 1 ms 2652 KB Output is correct
31 Correct 12 ms 19804 KB Output is correct
32 Correct 12 ms 19804 KB Output is correct
33 Correct 13 ms 20040 KB Output is correct
34 Correct 14 ms 20060 KB Output is correct
35 Correct 13 ms 20060 KB Output is correct
36 Correct 15 ms 19884 KB Output is correct
37 Correct 15 ms 19896 KB Output is correct
38 Correct 15 ms 20060 KB Output is correct
39 Correct 13 ms 20072 KB Output is correct
40 Correct 13 ms 20056 KB Output is correct
41 Correct 525 ms 392140 KB Output is correct
42 Correct 464 ms 392172 KB Output is correct
43 Correct 467 ms 392496 KB Output is correct
44 Correct 449 ms 392276 KB Output is correct
45 Correct 480 ms 392292 KB Output is correct
46 Correct 437 ms 392372 KB Output is correct
47 Correct 456 ms 392532 KB Output is correct
48 Correct 457 ms 392264 KB Output is correct
49 Correct 448 ms 392280 KB Output is correct
50 Correct 444 ms 392576 KB Output is correct
51 Correct 448 ms 392272 KB Output is correct
52 Correct 455 ms 392352 KB Output is correct
53 Correct 452 ms 392272 KB Output is correct
54 Correct 457 ms 392280 KB Output is correct
55 Correct 468 ms 392524 KB Output is correct