# | Submission time | Handle | Problem | Language | Result | Execution time | Memory |
---|---|---|---|---|---|---|---|
354210 | 2021-01-21T14:42:34 Z | spatarel | Cat in a tree (BOI17_catinatree) | C++17 | 13 ms | 9324 KB |
#include <stdio.h> #include <algorithm> #include <vector> const int MAX_N = 1500; // 200000 int N, D; std::vector<int> children[MAX_N]; int maxN[MAX_N][1 + MAX_N]; void dfs(int u) { for (int v : children[u]) { dfs(v); } maxN[u][0] = 1; for (int v : children[u]) { maxN[u][0] += maxN[v][D - 1]; } for (int d = 1; d < D; d++) { if (d * 2 >= D) { // d >= D / 2 maxN[u][d] = 0; for (int v : children[u]) { maxN[u][d] += maxN[v][d - 1]; } } else { maxN[u][d] = 0; int maxAdd = 0; for (int v : children[u]) { maxN[u][d] += maxN[v][D - d - 1]; maxAdd = std::max(maxAdd, maxN[v][d - 1] - maxN[v][D - d - 1]); } maxN[u][d] += maxAdd; } } for (int d = D - 1; d >= 1; d--) { maxN[u][d - 1] = std::max(maxN[u][d - 1], maxN[u][d]); } /* printf("maxN[%d] = {", u); for (int d = 0; d < D; d++) { printf("%d, ", maxN[u][d]); } printf("}\n");//*/ } int main() { scanf("%d%d", &N, &D); for (int i = 1; i < N; i++) { int xi; scanf("%d", &xi); children[xi].push_back(i); } dfs(0); int answer = maxN[0][0]; printf("%d\n", answer); return 0; }
Compilation message
# | Verdict | Execution time | Memory | Grader output |
---|---|---|---|---|
1 | Correct | 1 ms | 364 KB | Output is correct |
2 | Correct | 0 ms | 364 KB | Output is correct |
3 | Correct | 1 ms | 364 KB | Output is correct |
4 | Correct | 1 ms | 364 KB | Output is correct |
5 | Correct | 1 ms | 364 KB | Output is correct |
6 | Correct | 1 ms | 364 KB | Output is correct |
7 | Correct | 0 ms | 364 KB | Output is correct |
8 | Correct | 0 ms | 364 KB | Output is correct |
9 | Correct | 1 ms | 364 KB | Output is correct |
10 | Correct | 0 ms | 364 KB | Output is correct |
11 | Correct | 0 ms | 364 KB | Output is correct |
12 | Correct | 1 ms | 364 KB | Output is correct |
13 | Correct | 1 ms | 364 KB | Output is correct |
14 | Correct | 1 ms | 364 KB | Output is correct |
15 | Correct | 0 ms | 364 KB | Output is correct |
16 | Correct | 1 ms | 364 KB | Output is correct |
17 | Correct | 1 ms | 364 KB | Output is correct |
18 | Correct | 0 ms | 364 KB | Output is correct |
19 | Correct | 0 ms | 364 KB | Output is correct |
20 | Correct | 1 ms | 364 KB | Output is correct |
# | Verdict | Execution time | Memory | Grader output |
---|---|---|---|---|
1 | Correct | 1 ms | 364 KB | Output is correct |
2 | Correct | 0 ms | 364 KB | Output is correct |
3 | Correct | 1 ms | 364 KB | Output is correct |
4 | Correct | 1 ms | 364 KB | Output is correct |
5 | Correct | 1 ms | 364 KB | Output is correct |
6 | Correct | 1 ms | 364 KB | Output is correct |
7 | Correct | 0 ms | 364 KB | Output is correct |
8 | Correct | 0 ms | 364 KB | Output is correct |
9 | Correct | 1 ms | 364 KB | Output is correct |
10 | Correct | 0 ms | 364 KB | Output is correct |
11 | Correct | 0 ms | 364 KB | Output is correct |
12 | Correct | 1 ms | 364 KB | Output is correct |
13 | Correct | 1 ms | 364 KB | Output is correct |
14 | Correct | 1 ms | 364 KB | Output is correct |
15 | Correct | 0 ms | 364 KB | Output is correct |
16 | Correct | 1 ms | 364 KB | Output is correct |
17 | Correct | 1 ms | 364 KB | Output is correct |
18 | Correct | 0 ms | 364 KB | Output is correct |
19 | Correct | 0 ms | 364 KB | Output is correct |
20 | Correct | 1 ms | 364 KB | Output is correct |
21 | Correct | 13 ms | 9324 KB | Output is correct |
22 | Correct | 1 ms | 2412 KB | Output is correct |
23 | Correct | 1 ms | 2412 KB | Output is correct |
24 | Correct | 2 ms | 2412 KB | Output is correct |
25 | Correct | 3 ms | 4332 KB | Output is correct |
26 | Correct | 3 ms | 4332 KB | Output is correct |
27 | Correct | 3 ms | 4460 KB | Output is correct |
28 | Correct | 4 ms | 6508 KB | Output is correct |
29 | Correct | 4 ms | 6380 KB | Output is correct |
30 | Correct | 4 ms | 6508 KB | Output is correct |
31 | Correct | 4 ms | 6636 KB | Output is correct |
32 | Correct | 3 ms | 6252 KB | Output is correct |
33 | Correct | 3 ms | 6252 KB | Output is correct |
34 | Correct | 3 ms | 5996 KB | Output is correct |
35 | Correct | 4 ms | 5996 KB | Output is correct |
36 | Correct | 4 ms | 6380 KB | Output is correct |
37 | Correct | 3 ms | 6380 KB | Output is correct |
38 | Correct | 4 ms | 6636 KB | Output is correct |
39 | Correct | 5 ms | 6764 KB | Output is correct |
40 | Correct | 4 ms | 6508 KB | Output is correct |
# | Verdict | Execution time | Memory | Grader output |
---|---|---|---|---|
1 | Correct | 1 ms | 364 KB | Output is correct |
2 | Correct | 0 ms | 364 KB | Output is correct |
3 | Correct | 1 ms | 364 KB | Output is correct |
4 | Correct | 1 ms | 364 KB | Output is correct |
5 | Correct | 1 ms | 364 KB | Output is correct |
6 | Correct | 1 ms | 364 KB | Output is correct |
7 | Correct | 0 ms | 364 KB | Output is correct |
8 | Correct | 0 ms | 364 KB | Output is correct |
9 | Correct | 1 ms | 364 KB | Output is correct |
10 | Correct | 0 ms | 364 KB | Output is correct |
11 | Correct | 0 ms | 364 KB | Output is correct |
12 | Correct | 1 ms | 364 KB | Output is correct |
13 | Correct | 1 ms | 364 KB | Output is correct |
14 | Correct | 1 ms | 364 KB | Output is correct |
15 | Correct | 0 ms | 364 KB | Output is correct |
16 | Correct | 1 ms | 364 KB | Output is correct |
17 | Correct | 1 ms | 364 KB | Output is correct |
18 | Correct | 0 ms | 364 KB | Output is correct |
19 | Correct | 0 ms | 364 KB | Output is correct |
20 | Correct | 1 ms | 364 KB | Output is correct |
21 | Correct | 13 ms | 9324 KB | Output is correct |
22 | Correct | 1 ms | 2412 KB | Output is correct |
23 | Correct | 1 ms | 2412 KB | Output is correct |
24 | Correct | 2 ms | 2412 KB | Output is correct |
25 | Correct | 3 ms | 4332 KB | Output is correct |
26 | Correct | 3 ms | 4332 KB | Output is correct |
27 | Correct | 3 ms | 4460 KB | Output is correct |
28 | Correct | 4 ms | 6508 KB | Output is correct |
29 | Correct | 4 ms | 6380 KB | Output is correct |
30 | Correct | 4 ms | 6508 KB | Output is correct |
31 | Correct | 4 ms | 6636 KB | Output is correct |
32 | Correct | 3 ms | 6252 KB | Output is correct |
33 | Correct | 3 ms | 6252 KB | Output is correct |
34 | Correct | 3 ms | 5996 KB | Output is correct |
35 | Correct | 4 ms | 5996 KB | Output is correct |
36 | Correct | 4 ms | 6380 KB | Output is correct |
37 | Correct | 3 ms | 6380 KB | Output is correct |
38 | Correct | 4 ms | 6636 KB | Output is correct |
39 | Correct | 5 ms | 6764 KB | Output is correct |
40 | Correct | 4 ms | 6508 KB | Output is correct |
41 | Runtime error | 2 ms | 620 KB | Execution killed with signal 11 |
42 | Halted | 0 ms | 0 KB | - |