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Submission #823220

# Submission time Handle Problem Language Result Execution time Memory
823220 2023-08-12T09:35:15 Z t6twotwo Tortoise (CEOI21_tortoise) C++17
18 / 100
 89 ms 2092 KB 
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    int N;
    cin >> N;
    vector<int> A(N);
    for (int i = 0; i < N; i++) {
        cin >> A[i];
    }
    vector<int> L(N, -1), R(N, N);
    for (int i = 0; i < N; i++) {
        if (A[i] == -1) {
            L[i] = i;
        } else if (i) {
            L[i] = L[i - 1];
        }
        int j = N - i - 1;
        if (A[j] == -1) {
            R[j] = j;
        } else if (i) {
            R[j] = R[j + 1];
        }
    }
    int ans = 0;
    vector dp(2 * N + 1, vector<int>(N, -1e9));
    dp[0][0] = 0;
    for (int i = 0; i < N; i++) {
        if (A[i] != 1) {
            continue;
        }
        auto pd = dp;
        for (int j = 0; j <= 2 * N; j++) {
            for (int k = 0; k < N; k++) {
                if (j + abs(i - k) > 2 * i) {
                    continue;
                }
                ans = max(ans, pd[j][k] + 1);
                if (L[i] != -1) {
                    int p = j + abs(i - k) + i - L[i];
                    if (p <= 2 * N) {
                        dp[p][L[i]] = max(dp[p][L[i]], pd[j][k] + 1);
                    }
                }
                if (R[i] != N) {
                    int p = j + abs(i - k) + R[i] - i;
                    if (p <= 2 * N) {
                        dp[p][R[i]] = max(dp[p][R[i]], pd[j][k] + 1);
                    }
                }
            }
        }
    }
    ans = -ans;
    for (int i = 0; i < N; i++) {
        if (A[i] != -1) {
            ans += A[i];
        }
    }
    cout << ans << "\n";
    return 6/22;
}

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 328 KB Output is correct
4 Correct 1 ms 320 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 324 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Correct 0 ms 212 KB Output is correct
22 Correct 0 ms 324 KB Output is correct
23 Correct 0 ms 212 KB Output is correct
24 Correct 0 ms 212 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 0 ms 212 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 328 KB Output is correct
4 Correct 1 ms 320 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 324 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Correct 0 ms 212 KB Output is correct
22 Correct 0 ms 324 KB Output is correct
23 Correct 0 ms 212 KB Output is correct
24 Correct 0 ms 212 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 0 ms 212 KB Output is correct
27 Correct 39 ms 1328 KB Output is correct
28 Correct 89 ms 1700 KB Output is correct
29 Correct 65 ms 1568 KB Output is correct
30 Correct 41 ms 1688 KB Output is correct
31 Correct 57 ms 1724 KB Output is correct
32 Correct 29 ms 1132 KB Output is correct
33 Correct 55 ms 1624 KB Output is correct
34 Correct 45 ms 1368 KB Output is correct
35 Correct 53 ms 2000 KB Output is correct
36 Correct 50 ms 1780 KB Output is correct
37 Correct 57 ms 1908 KB Output is correct
38 Correct 56 ms 2000 KB Output is correct
39 Correct 72 ms 1880 KB Output is correct
40 Correct 50 ms 2092 KB Output is correct
41 Correct 53 ms 1772 KB Output is correct

Subtask #3
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 328 KB Output is correct
4 Correct 1 ms 320 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 324 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Correct 0 ms 212 KB Output is correct
22 Correct 0 ms 324 KB Output is correct
23 Correct 0 ms 212 KB Output is correct
24 Correct 0 ms 212 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 0 ms 212 KB Output is correct
27 Correct 39 ms 1328 KB Output is correct
28 Correct 89 ms 1700 KB Output is correct
29 Correct 65 ms 1568 KB Output is correct
30 Correct 41 ms 1688 KB Output is correct
31 Correct 57 ms 1724 KB Output is correct
32 Correct 29 ms 1132 KB Output is correct
33 Correct 55 ms 1624 KB Output is correct
34 Correct 45 ms 1368 KB Output is correct
35 Correct 53 ms 2000 KB Output is correct
36 Correct 50 ms 1780 KB Output is correct
37 Correct 57 ms 1908 KB Output is correct
38 Correct 56 ms 2000 KB Output is correct
39 Correct 72 ms 1880 KB Output is correct
40 Correct 50 ms 2092 KB Output is correct
41 Correct 53 ms 1772 KB Output is correct
42 Incorrect 4 ms 1004 KB Output isn't correct
43 Halted 0 ms 0 KB -

Subtask #4
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 328 KB Output is correct
4 Correct 1 ms 320 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 324 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Correct 0 ms 212 KB Output is correct
22 Correct 0 ms 324 KB Output is correct
23 Correct 0 ms 212 KB Output is correct
24 Correct 0 ms 212 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 0 ms 212 KB Output is correct
27 Correct 39 ms 1328 KB Output is correct
28 Correct 89 ms 1700 KB Output is correct
29 Correct 65 ms 1568 KB Output is correct
30 Correct 41 ms 1688 KB Output is correct
31 Correct 57 ms 1724 KB Output is correct
32 Correct 29 ms 1132 KB Output is correct
33 Correct 55 ms 1624 KB Output is correct
34 Correct 45 ms 1368 KB Output is correct
35 Correct 53 ms 2000 KB Output is correct
36 Correct 50 ms 1780 KB Output is correct
37 Correct 57 ms 1908 KB Output is correct
38 Correct 56 ms 2000 KB Output is correct
39 Correct 72 ms 1880 KB Output is correct
40 Correct 50 ms 2092 KB Output is correct
41 Correct 53 ms 1772 KB Output is correct
42 Incorrect 4 ms 1004 KB Output isn't correct
43 Halted 0 ms 0 KB -

Subtask #5
0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 328 KB Output is correct
4 Correct 1 ms 320 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 324 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Correct 0 ms 212 KB Output is correct
22 Correct 0 ms 324 KB Output is correct
23 Correct 0 ms 212 KB Output is correct
24 Correct 0 ms 212 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 0 ms 212 KB Output is correct
27 Correct 39 ms 1328 KB Output is correct
28 Correct 89 ms 1700 KB Output is correct
29 Correct 65 ms 1568 KB Output is correct
30 Correct 41 ms 1688 KB Output is correct
31 Correct 57 ms 1724 KB Output is correct
32 Correct 29 ms 1132 KB Output is correct
33 Correct 55 ms 1624 KB Output is correct
34 Correct 45 ms 1368 KB Output is correct
35 Correct 53 ms 2000 KB Output is correct
36 Correct 50 ms 1780 KB Output is correct
37 Correct 57 ms 1908 KB Output is correct
38 Correct 56 ms 2000 KB Output is correct
39 Correct 72 ms 1880 KB Output is correct
40 Correct 50 ms 2092 KB Output is correct
41 Correct 53 ms 1772 KB Output is correct
42 Incorrect 4 ms 1004 KB Output isn't correct
43 Halted 0 ms 0 KB -