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Submission #855532

# Submission time Handle Problem Language Result Execution time Memory
855532 2023-10-01T11:48:07 Z tvladm2009 Giraffes (JOI22_giraffes) C++17
59 / 100
 1585 ms 7356 KB 
#include <bits/stdc++.h>

using namespace std;

typedef long long ll;
const int N = 8000 + 7;
int a[N], pos[N], dp[2][N][307];

int main() {
#ifdef ONPC
  freopen("input.txt", "r", stdin);
#else
  ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
#endif // ONPC

  int n;
  cin >> n;
  for (int i = 1; i <= n; i++) {
    cin >> a[i];
    pos[a[i]] = i;
  }
  for (int len = 1; len <= n; len++) {
    for (int l = 1; l + len - 1 <= n; l++) {
      for (int t = 1; t <= 300 && t + len - 1 <= n; t++) {
        int r = l + len - 1;
        int tt = t + len - 1;

        if (a[l] == t) {
          dp[len & 1][l][t] = dp[(len - 1) & 1][l + 1][t + 1] + 1;
        } else if (a[r] == t) {
          dp[len & 1][l][t] = dp[(len - 1) & 1][l][t + 1] + 1;
        } else if (a[l] == tt) {
          dp[len & 1][l][t] = dp[(len - 1) & 1][l + 1][t] + 1;
        } else if (a[r] == tt) {
          dp[len & 1][l][t] = dp[(len - 1) & 1][l][t] + 1;
        } else {
          dp[len & 1][l][t] = max({dp[(len - 1) & 1][l][t], dp[(len - 1) & 1][l + 1][t], dp[(len - 1) & 1][l][t + 1], dp[(len - 1) & 1][l + 1][t + 1]});
        }
      }
    }
  }
  cout << n - dp[n & 1][1][1] << "\n";
  return 0;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 0 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 0 ms 2396 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 0 ms 2396 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 2396 KB Output is correct

Subtask #2
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 0 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 0 ms 2396 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 0 ms 2396 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 2396 KB Output is correct
11 Correct 0 ms 2396 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 0 ms 2396 KB Output is correct
14 Correct 1 ms 2440 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct
16 Correct 0 ms 2396 KB Output is correct
17 Correct 1 ms 2396 KB Output is correct
18 Correct 0 ms 2396 KB Output is correct
19 Correct 0 ms 2396 KB Output is correct
20 Correct 0 ms 2396 KB Output is correct

Subtask #3
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 0 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 0 ms 2396 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 0 ms 2396 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 2396 KB Output is correct
11 Correct 0 ms 2396 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 0 ms 2396 KB Output is correct
14 Correct 1 ms 2440 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct
16 Correct 0 ms 2396 KB Output is correct
17 Correct 1 ms 2396 KB Output is correct
18 Correct 0 ms 2396 KB Output is correct
19 Correct 0 ms 2396 KB Output is correct
20 Correct 0 ms 2396 KB Output is correct
21 Correct 1 ms 2396 KB Output is correct
22 Correct 1 ms 2396 KB Output is correct
23 Correct 5 ms 2652 KB Output is correct
24 Correct 10 ms 2812 KB Output is correct
25 Correct 17 ms 2652 KB Output is correct
26 Correct 21 ms 2868 KB Output is correct
27 Correct 23 ms 2876 KB Output is correct
28 Correct 21 ms 2652 KB Output is correct
29 Correct 19 ms 2652 KB Output is correct
30 Correct 20 ms 2652 KB Output is correct

Subtask #4
0 / 41.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 0 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 0 ms 2396 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 0 ms 2396 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 2396 KB Output is correct
11 Correct 0 ms 2396 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 0 ms 2396 KB Output is correct
14 Correct 1 ms 2440 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct
16 Correct 0 ms 2396 KB Output is correct
17 Correct 1 ms 2396 KB Output is correct
18 Correct 0 ms 2396 KB Output is correct
19 Correct 0 ms 2396 KB Output is correct
20 Correct 0 ms 2396 KB Output is correct
21 Correct 1 ms 2396 KB Output is correct
22 Correct 1 ms 2396 KB Output is correct
23 Correct 5 ms 2652 KB Output is correct
24 Correct 10 ms 2812 KB Output is correct
25 Correct 17 ms 2652 KB Output is correct
26 Correct 21 ms 2868 KB Output is correct
27 Correct 23 ms 2876 KB Output is correct
28 Correct 21 ms 2652 KB Output is correct
29 Correct 19 ms 2652 KB Output is correct
30 Correct 20 ms 2652 KB Output is correct
31 Incorrect 1585 ms 7356 KB Output isn't correct
32 Halted 0 ms 0 KB -