oj.uz

Submission #874974

# Submission time Handle Problem Language Result Execution time Memory
874974 2023-11-18T11:22:23 Z makrav Group Photo (JOI21_ho_t3) C++14
100 / 100
 441 ms 337564 KB 
#include <bits/stdc++.h>
 
using namespace std;
 
typedef long long ll;
typedef long double ld;
typedef vector<int> vei;
typedef vector<vei> vevei;
 
#define coa               \
            for (auto i : a) {    \
                cout << i << ' '; \
            }                     \
            cout << '\n';
#define cia             \
            for (auto& i : a) { \
                cin >> a;       \
            }
#define cna                       \
            int n;                        \
            cin >> n;                     \
            vector<int> a(n);             \
            for (int i = 0; i < n; i++) { \
                cin >> a[i];              \
            }
#define cnka                      \
            int n, k;                     \
            cin >> n >> k;                \
            vector<int> a(n);             \
            for (int i = 0; i < n; i++) { \
                cin >> a[i];              \
            }
#define cnab                      \
            int n;                        \
            cin >> n;                     \
            vector<int> a(n);             \
            for (int i = 0; i < n; i++) { \
                cin >> a[i];              \
            }                             \
            vector<int> b(n);             \
            for (int i = 0; i < n; i++) { \
                cin >> b[i];              \
            }
#define all(a) (a).begin(), (a).end()
#define sz(a) (int) a.size()
#define con cout << "No\n"
#define coe cout << "Yes\n";
#define str string
#define pb push_back
#define ff first
#define sc second
#define pii pair<ll, ll>
#define mxe max_element
#define mne min_element
#define stf shrink_to_fit
#define f(i, l, r) for (int i = (l); i < (r); i++)
#define double ld
#define int ll
 
int pereh[5001][5001], dp[5001][5001];
 
struct fenwick {
    int n;
    vector<int> t;
    fenwick() = default;
    fenwick(int n_) {
        n = n_;
        t.assign(n + 1, 0);
    }
 
    void clear() {
        t.assign(n + 1, 0);
    }
 
    int sum(int x) {
        int ans = 0;
        for (int i = x; i >= 0; i = (i & (i + 1)) - 1) {
            ans += t[i];
        }
        return ans;
    }
 
    void upd(int pos, int delta) {
        for (int i = pos; i < n; i = i | (i + 1)) {
            t[i] += delta;
        }
    }
};
 
signed main() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    cout.tie(nullptr);
 
    int n; cin >> n;
    vector<int> a(n);
    for (auto& u : a) cin >> u;
    vector<int> pos(n + 1);
    f(i, 0, n)pos[a[i]] = i;
    fenwick fw(n), fw2(n);
    f(i, 1, n + 1)fw.upd(i, 1);
    f(i, 1, n + 1) {
        fw2.clear();
        for (int j = i; j <= n; j++) {
            pereh[i][j] = pereh[i][j - 1] + fw.sum(pos[j]) + fw2.sum(pos[j]) - (j - i);
            //cout << i << ' ' << j << ' ' << pereh[i][j] << '\n';
            fw2.upd(pos[j] + 1, 1);
        }
        fw.upd(pos[i] + 1, -1);
    }
    vector<int> best_dp(n + 1, 1e18);
    best_dp[0] = 0;
    f(i, 1, n + 1) {
        for (int j = 1; j <= i; j++) {
            dp[i][j] = pereh[j][i] + best_dp[j - 1];
            //cout << i << ' ' << j << ' ' << dp[i][j] << '\n';
            best_dp[i] = min(best_dp[i], dp[i][j]);
        }
    }
    cout << best_dp[n] << '\n';
 
    return 0;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 1 ms 2392 KB Output is correct
8 Correct 1 ms 2392 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2512 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 1 ms 2392 KB Output is correct
8 Correct 1 ms 2392 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2512 KB Output is correct
11 Correct 1 ms 2396 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 1 ms 2396 KB Output is correct
14 Correct 1 ms 2396 KB Output is correct
15 Correct 1 ms 2520 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 1 ms 2396 KB Output is correct
18 Correct 1 ms 2396 KB Output is correct
19 Correct 0 ms 2396 KB Output is correct
20 Correct 1 ms 2396 KB Output is correct

Subtask #3
32.0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 1 ms 2392 KB Output is correct
8 Correct 1 ms 2392 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2512 KB Output is correct
11 Correct 1 ms 2396 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 1 ms 2396 KB Output is correct
14 Correct 1 ms 2396 KB Output is correct
15 Correct 1 ms 2520 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 1 ms 2396 KB Output is correct
18 Correct 1 ms 2396 KB Output is correct
19 Correct 0 ms 2396 KB Output is correct
20 Correct 1 ms 2396 KB Output is correct
21 Correct 2 ms 9560 KB Output is correct
22 Correct 2 ms 9564 KB Output is correct
23 Correct 2 ms 9664 KB Output is correct
24 Correct 2 ms 9560 KB Output is correct
25 Correct 2 ms 9564 KB Output is correct
26 Correct 2 ms 9560 KB Output is correct
27 Correct 2 ms 9816 KB Output is correct
28 Correct 2 ms 9564 KB Output is correct
29 Correct 2 ms 9560 KB Output is correct
30 Correct 2 ms 9816 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 1 ms 2392 KB Output is correct
8 Correct 1 ms 2392 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2512 KB Output is correct
11 Correct 1 ms 2396 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 1 ms 2396 KB Output is correct
14 Correct 1 ms 2396 KB Output is correct
15 Correct 1 ms 2520 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 1 ms 2396 KB Output is correct
18 Correct 1 ms 2396 KB Output is correct
19 Correct 0 ms 2396 KB Output is correct
20 Correct 1 ms 2396 KB Output is correct
21 Correct 2 ms 9560 KB Output is correct
22 Correct 2 ms 9564 KB Output is correct
23 Correct 2 ms 9664 KB Output is correct
24 Correct 2 ms 9560 KB Output is correct
25 Correct 2 ms 9564 KB Output is correct
26 Correct 2 ms 9560 KB Output is correct
27 Correct 2 ms 9816 KB Output is correct
28 Correct 2 ms 9564 KB Output is correct
29 Correct 2 ms 9560 KB Output is correct
30 Correct 2 ms 9816 KB Output is correct
31 Correct 11 ms 40540 KB Output is correct
32 Correct 11 ms 40540 KB Output is correct
33 Correct 11 ms 40536 KB Output is correct
34 Correct 11 ms 40540 KB Output is correct
35 Correct 11 ms 40616 KB Output is correct
36 Correct 11 ms 40536 KB Output is correct
37 Correct 11 ms 40540 KB Output is correct
38 Correct 11 ms 40540 KB Output is correct
39 Correct 11 ms 40540 KB Output is correct
40 Correct 11 ms 40440 KB Output is correct

Subtask #5
36.0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 1 ms 2392 KB Output is correct
8 Correct 1 ms 2392 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2512 KB Output is correct
11 Correct 1 ms 2396 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 1 ms 2396 KB Output is correct
14 Correct 1 ms 2396 KB Output is correct
15 Correct 1 ms 2520 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 1 ms 2396 KB Output is correct
18 Correct 1 ms 2396 KB Output is correct
19 Correct 0 ms 2396 KB Output is correct
20 Correct 1 ms 2396 KB Output is correct
21 Correct 2 ms 9560 KB Output is correct
22 Correct 2 ms 9564 KB Output is correct
23 Correct 2 ms 9664 KB Output is correct
24 Correct 2 ms 9560 KB Output is correct
25 Correct 2 ms 9564 KB Output is correct
26 Correct 2 ms 9560 KB Output is correct
27 Correct 2 ms 9816 KB Output is correct
28 Correct 2 ms 9564 KB Output is correct
29 Correct 2 ms 9560 KB Output is correct
30 Correct 2 ms 9816 KB Output is correct
31 Correct 11 ms 40540 KB Output is correct
32 Correct 11 ms 40540 KB Output is correct
33 Correct 11 ms 40536 KB Output is correct
34 Correct 11 ms 40540 KB Output is correct
35 Correct 11 ms 40616 KB Output is correct
36 Correct 11 ms 40536 KB Output is correct
37 Correct 11 ms 40540 KB Output is correct
38 Correct 11 ms 40540 KB Output is correct
39 Correct 11 ms 40540 KB Output is correct
40 Correct 11 ms 40440 KB Output is correct
41 Correct 441 ms 337072 KB Output is correct
42 Correct 387 ms 336996 KB Output is correct
43 Correct 386 ms 337212 KB Output is correct
44 Correct 380 ms 336976 KB Output is correct
45 Correct 381 ms 337564 KB Output is correct
46 Correct 386 ms 337108 KB Output is correct
47 Correct 397 ms 337204 KB Output is correct
48 Correct 384 ms 337124 KB Output is correct
49 Correct 392 ms 337016 KB Output is correct
50 Correct 385 ms 337236 KB Output is correct
51 Correct 379 ms 337092 KB Output is correct
52 Correct 393 ms 337112 KB Output is correct
53 Correct 395 ms 337108 KB Output is correct
54 Correct 392 ms 337240 KB Output is correct
55 Correct 385 ms 337104 KB Output is correct