oj.uz

Submission #409475

# Submission time Handle Problem Language Result Execution time Memory
409475 2021-05-20T21:30:50 Z 534351 Group Photo (JOI21_ho_t3) C++17
100 / 100
 401 ms 134472 KB 
#include <bits/stdc++.h>

using namespace std;

template<class T, class U>
void ckmin(T &a, U b)
{
    if (a > b) a = b;
}

template<class T, class U>
void ckmax(T &a, U b)
{
    if (a < b) a = b;
}

#define MP make_pair
#define PB push_back
#define LB lower_bound
#define UB upper_bound
#define fi first
#define se second
#define SZ(x) ((int) (x).size())
#define ALL(x) (x).begin(), (x).end()
#define FOR(i, a, b) for (auto i = (a); i < (b); i++)
#define FORD(i, a, b) for (auto i = (a) - 1; i >= (b); i--)

const int MAXN = 5013;
const int INF = 1e9 + 7;

typedef long long ll;
typedef long double ld;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
typedef vector<int> vi;
typedef vector<ll> vl;
typedef vector<pii> vpi;
typedef vector<pll> vpl;

int N;
int arr[MAXN], pos[MAXN];
int inv[MAXN][MAXN], inv1[MAXN][MAXN];
int dp[MAXN];

int32_t main()
{
    cout << fixed << setprecision(12);
    cerr << fixed << setprecision(4);
    ios_base::sync_with_stdio(false); cin.tie(0);
    cin >> N;
    FOR(i, 1, N + 1)
    {
        cin >> arr[i];
        pos[arr[i]] = i;
    }
    FOR(i, 1, N + 1)
    {
        FOR(j, i + 1, N + 1)
        {
            inv[j][i] = inv[j - 1][i] + inv[j][i - 1] - inv[j - 1][i - 1] + (bool) (pos[j] < pos[i]);
        }
    }
    FOR(i, 1, N + 1)
    {
        FOR(j, 1, N + 1 - i)
        {
            //j...j+i.
            inv1[j][j + i] = inv1[j + 1][j + i] + inv1[j][j + i - 1] - inv1[j + 1][j + i - 1] + (bool) (pos[j + i] > pos[j]);
        }
    }
    dp[0] = 0;
    FOR(i, 1, N + 1)
    {
        dp[i] = INF;
        FOR(j, 0, i)
        {
            ckmin(dp[i], dp[j] + inv[i][j] + inv1[j + 1][i]);
        }
    }
    cout << dp[N] << '\n';
    return 0;
}

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 316 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 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 316 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 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 448 KB Output is correct
12 Correct 1 ms 460 KB Output is correct
13 Correct 1 ms 460 KB Output is correct
14 Correct 1 ms 460 KB Output is correct
15 Correct 1 ms 460 KB Output is correct
16 Correct 1 ms 460 KB Output is correct
17 Correct 1 ms 460 KB Output is correct
18 Correct 1 ms 460 KB Output is correct
19 Correct 1 ms 460 KB Output is correct
20 Correct 1 ms 444 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 316 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 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 448 KB Output is correct
12 Correct 1 ms 460 KB Output is correct
13 Correct 1 ms 460 KB Output is correct
14 Correct 1 ms 460 KB Output is correct
15 Correct 1 ms 460 KB Output is correct
16 Correct 1 ms 460 KB Output is correct
17 Correct 1 ms 460 KB Output is correct
18 Correct 1 ms 460 KB Output is correct
19 Correct 1 ms 460 KB Output is correct
20 Correct 1 ms 444 KB Output is correct
21 Correct 2 ms 1996 KB Output is correct
22 Correct 2 ms 1996 KB Output is correct
23 Correct 2 ms 1996 KB Output is correct
24 Correct 2 ms 1980 KB Output is correct
25 Correct 2 ms 1996 KB Output is correct
26 Correct 2 ms 1996 KB Output is correct
27 Correct 2 ms 1996 KB Output is correct
28 Correct 2 ms 1996 KB Output is correct
29 Correct 2 ms 1996 KB Output is correct
30 Correct 2 ms 1996 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 316 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 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 448 KB Output is correct
12 Correct 1 ms 460 KB Output is correct
13 Correct 1 ms 460 KB Output is correct
14 Correct 1 ms 460 KB Output is correct
15 Correct 1 ms 460 KB Output is correct
16 Correct 1 ms 460 KB Output is correct
17 Correct 1 ms 460 KB Output is correct
18 Correct 1 ms 460 KB Output is correct
19 Correct 1 ms 460 KB Output is correct
20 Correct 1 ms 444 KB Output is correct
21 Correct 2 ms 1996 KB Output is correct
22 Correct 2 ms 1996 KB Output is correct
23 Correct 2 ms 1996 KB Output is correct
24 Correct 2 ms 1980 KB Output is correct
25 Correct 2 ms 1996 KB Output is correct
26 Correct 2 ms 1996 KB Output is correct
27 Correct 2 ms 1996 KB Output is correct
28 Correct 2 ms 1996 KB Output is correct
29 Correct 2 ms 1996 KB Output is correct
30 Correct 2 ms 1996 KB Output is correct
31 Correct 8 ms 9164 KB Output is correct
32 Correct 9 ms 9164 KB Output is correct
33 Correct 9 ms 9268 KB Output is correct
34 Correct 9 ms 9164 KB Output is correct
35 Correct 9 ms 9280 KB Output is correct
36 Correct 9 ms 9288 KB Output is correct
37 Correct 9 ms 9164 KB Output is correct
38 Correct 9 ms 9164 KB Output is correct
39 Correct 9 ms 9164 KB Output is correct
40 Correct 9 ms 9248 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 316 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 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 448 KB Output is correct
12 Correct 1 ms 460 KB Output is correct
13 Correct 1 ms 460 KB Output is correct
14 Correct 1 ms 460 KB Output is correct
15 Correct 1 ms 460 KB Output is correct
16 Correct 1 ms 460 KB Output is correct
17 Correct 1 ms 460 KB Output is correct
18 Correct 1 ms 460 KB Output is correct
19 Correct 1 ms 460 KB Output is correct
20 Correct 1 ms 444 KB Output is correct
21 Correct 2 ms 1996 KB Output is correct
22 Correct 2 ms 1996 KB Output is correct
23 Correct 2 ms 1996 KB Output is correct
24 Correct 2 ms 1980 KB Output is correct
25 Correct 2 ms 1996 KB Output is correct
26 Correct 2 ms 1996 KB Output is correct
27 Correct 2 ms 1996 KB Output is correct
28 Correct 2 ms 1996 KB Output is correct
29 Correct 2 ms 1996 KB Output is correct
30 Correct 2 ms 1996 KB Output is correct
31 Correct 8 ms 9164 KB Output is correct
32 Correct 9 ms 9164 KB Output is correct
33 Correct 9 ms 9268 KB Output is correct
34 Correct 9 ms 9164 KB Output is correct
35 Correct 9 ms 9280 KB Output is correct
36 Correct 9 ms 9288 KB Output is correct
37 Correct 9 ms 9164 KB Output is correct
38 Correct 9 ms 9164 KB Output is correct
39 Correct 9 ms 9164 KB Output is correct
40 Correct 9 ms 9248 KB Output is correct
41 Correct 385 ms 134240 KB Output is correct
42 Correct 394 ms 134412 KB Output is correct
43 Correct 391 ms 134220 KB Output is correct
44 Correct 382 ms 134456 KB Output is correct
45 Correct 390 ms 134216 KB Output is correct
46 Correct 385 ms 134456 KB Output is correct
47 Correct 390 ms 134336 KB Output is correct
48 Correct 381 ms 134392 KB Output is correct
49 Correct 394 ms 134364 KB Output is correct
50 Correct 400 ms 134464 KB Output is correct
51 Correct 380 ms 134344 KB Output is correct
52 Correct 396 ms 134468 KB Output is correct
53 Correct 401 ms 134380 KB Output is correct
54 Correct 387 ms 134472 KB Output is correct
55 Correct 391 ms 134340 KB Output is correct