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Submission #937894

# Submission time Handle Problem Language Result Execution time Memory
937894 2024-03-04T16:15:15 Z zwezdinv Group Photo (JOI21_ho_t3) C++17
100 / 100
 369 ms 98644 KB 
#include <bits/stdc++.h>

int main() {
        std::cin.tie(nullptr)->sync_with_stdio(false);

        int n;
        std::cin >> n;
        std::vector<int> h(n);
        for (auto& i : h) std::cin >> i;
        std::vector<int> pos(n);
        for (int i = 0; i < n; ++i) pos[h[i] - 1] = i;
        std::vector<std::vector<int>> pref(n + 1, std::vector<int>(n + 1));
        for (int i = 0; i < n; ++i) {
                pref[i + 1] = pref[i];
                for (int j = 0; j <= n; ++j) {
                        if (h[i] <= j) pref[i + 1][j]++;
                }
        }
        std::vector<int> dp(n + 1, 1e9);
        dp[0] = 0;
        for (int i = 0; i < n; ++i) {
                int cur = dp[i];
                for (int j = i; j < n; ++j) {
                        int k = pos[j];
                        int add = k - i;
                        add += pref[n][j] - pref[k][j];
                        add -= 2 * ((pref[n][j] - pref[n][i]) - (pref[k][j] - pref[k][i]));
                        cur += add;
                        dp[j + 1] = std::min(dp[j + 1], cur);
                }
        }
        std::cout << dp[n];
}

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 500 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 344 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 344 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 1 ms 344 KB Output is correct
2 Correct 1 ms 500 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 344 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 344 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 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 500 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 344 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 344 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 1 ms 604 KB Output is correct
22 Correct 1 ms 604 KB Output is correct
23 Correct 1 ms 452 KB Output is correct
24 Correct 0 ms 604 KB Output is correct
25 Correct 1 ms 600 KB Output is correct
26 Correct 1 ms 604 KB Output is correct
27 Correct 1 ms 856 KB Output is correct
28 Correct 1 ms 604 KB Output is correct
29 Correct 0 ms 604 KB Output is correct
30 Correct 0 ms 604 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 500 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 344 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 344 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 1 ms 604 KB Output is correct
22 Correct 1 ms 604 KB Output is correct
23 Correct 1 ms 452 KB Output is correct
24 Correct 0 ms 604 KB Output is correct
25 Correct 1 ms 600 KB Output is correct
26 Correct 1 ms 604 KB Output is correct
27 Correct 1 ms 856 KB Output is correct
28 Correct 1 ms 604 KB Output is correct
29 Correct 0 ms 604 KB Output is correct
30 Correct 0 ms 604 KB Output is correct
31 Correct 3 ms 2904 KB Output is correct
32 Correct 3 ms 2904 KB Output is correct
33 Correct 3 ms 2908 KB Output is correct
34 Correct 3 ms 2908 KB Output is correct
35 Correct 4 ms 2904 KB Output is correct
36 Correct 3 ms 2908 KB Output is correct
37 Correct 3 ms 2908 KB Output is correct
38 Correct 3 ms 2908 KB Output is correct
39 Correct 3 ms 2908 KB Output is correct
40 Correct 3 ms 2908 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 500 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 344 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 344 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 1 ms 604 KB Output is correct
22 Correct 1 ms 604 KB Output is correct
23 Correct 1 ms 452 KB Output is correct
24 Correct 0 ms 604 KB Output is correct
25 Correct 1 ms 600 KB Output is correct
26 Correct 1 ms 604 KB Output is correct
27 Correct 1 ms 856 KB Output is correct
28 Correct 1 ms 604 KB Output is correct
29 Correct 0 ms 604 KB Output is correct
30 Correct 0 ms 604 KB Output is correct
31 Correct 3 ms 2904 KB Output is correct
32 Correct 3 ms 2904 KB Output is correct
33 Correct 3 ms 2908 KB Output is correct
34 Correct 3 ms 2908 KB Output is correct
35 Correct 4 ms 2904 KB Output is correct
36 Correct 3 ms 2908 KB Output is correct
37 Correct 3 ms 2908 KB Output is correct
38 Correct 3 ms 2908 KB Output is correct
39 Correct 3 ms 2908 KB Output is correct
40 Correct 3 ms 2908 KB Output is correct
41 Correct 336 ms 98644 KB Output is correct
42 Correct 328 ms 98540 KB Output is correct
43 Correct 333 ms 98564 KB Output is correct
44 Correct 327 ms 98560 KB Output is correct
45 Correct 324 ms 98384 KB Output is correct
46 Correct 363 ms 98576 KB Output is correct
47 Correct 337 ms 98580 KB Output is correct
48 Correct 324 ms 98384 KB Output is correct
49 Correct 355 ms 98572 KB Output is correct
50 Correct 369 ms 98396 KB Output is correct
51 Correct 324 ms 98580 KB Output is correct
52 Correct 324 ms 98388 KB Output is correct
53 Correct 337 ms 98576 KB Output is correct
54 Correct 317 ms 98384 KB Output is correct
55 Correct 324 ms 98552 KB Output is correct