# | Submission time | Handle | Problem | Language | Result | Execution time | Memory |
---|---|---|---|---|---|---|---|
124798 | 2019-07-04T02:08:46 Z | model_code | Cat in a tree (BOI17_catinatree) | C++17 | 123 ms | 20008 KB |
#include<cstdio> #include<iostream> #include<vector> #include<algorithm> using namespace std; int N,D; vector<vector<int> > T; vector<int> opt, optdist, sacrdist; void DFS(int pos) { // Base case: pos is a leaf if(T[pos].size() == 0) { opt[pos] = 1; optdist[pos] = 0; sacrdist[pos] = D; return; } int v = T[pos][0]; DFS(v); if(optdist[v] + 1 >= D) { opt[pos] = opt[v] + 1; optdist[pos] = 0; sacrdist[pos] = optdist[v] + 1; } else { opt[pos] = opt[v]; optdist[pos] = optdist[v] + 1; sacrdist[pos] = sacrdist[v] + 1; } for(int i = 1; i < T[pos].size(); ++i) { int v = T[pos][i]; DFS(v); // distance between closest points and // distance to root // in the 4 possible solution combinations. int doo = optdist[pos] + optdist[v] + 1; int mdoo = min(optdist[pos], optdist[v] + 1); int dos = optdist[pos] + sacrdist[v] + 1; int mdos = min(optdist[pos], sacrdist[v] + 1); int dso = sacrdist[pos] + optdist[v] + 1; int mdso = min(sacrdist[pos], optdist[v] + 1); int dss = sacrdist[pos] + sacrdist[v] + 1; int mdss = min(sacrdist[pos], sacrdist[v] + 1); if(doo >= D) { opt[pos] += opt[v]; optdist[pos] = mdoo; sacrdist[pos] = max(mdos, mdso); } else { opt[pos] += opt[v] - 1; if(dos >= D) optdist[pos] = mdos; else optdist[pos] = 0; if(dso >= D) optdist[pos] = max(optdist[pos], mdso); sacrdist[pos] = mdss; } } } int main() { scanf("%d%d", &N, &D); T = vector<vector<int> > (N); opt = vector<int> (N, 0); optdist = vector<int> (N, 0); sacrdist = vector<int> (N, 0); for(int i = 1; i < N; ++i) { int a; scanf("%d", &a); T[a].push_back(i); } DFS(0); printf("%d\n", opt[0]); return 0; }
Compilation message
# | Verdict | Execution time | Memory | Grader output |
---|---|---|---|---|
1 | Correct | 2 ms | 424 KB | Output is correct |
2 | Correct | 2 ms | 376 KB | Output is correct |
3 | Correct | 2 ms | 376 KB | Output is correct |
4 | Correct | 2 ms | 376 KB | Output is correct |
5 | Correct | 2 ms | 256 KB | Output is correct |
6 | Correct | 2 ms | 256 KB | Output is correct |
7 | Correct | 2 ms | 256 KB | Output is correct |
8 | Correct | 2 ms | 256 KB | Output is correct |
9 | Correct | 2 ms | 256 KB | Output is correct |
10 | Correct | 2 ms | 256 KB | Output is correct |
11 | Correct | 2 ms | 376 KB | Output is correct |
12 | Correct | 2 ms | 256 KB | Output is correct |
13 | Correct | 2 ms | 256 KB | Output is correct |
14 | Correct | 2 ms | 376 KB | Output is correct |
15 | Correct | 2 ms | 256 KB | Output is correct |
16 | Correct | 2 ms | 256 KB | Output is correct |
17 | Correct | 2 ms | 256 KB | Output is correct |
18 | Correct | 2 ms | 376 KB | Output is correct |
19 | Correct | 2 ms | 256 KB | Output is correct |
20 | Correct | 2 ms | 256 KB | Output is correct |
# | Verdict | Execution time | Memory | Grader output |
---|---|---|---|---|
1 | Correct | 2 ms | 424 KB | Output is correct |
2 | Correct | 2 ms | 376 KB | Output is correct |
3 | Correct | 2 ms | 376 KB | Output is correct |
4 | Correct | 2 ms | 376 KB | Output is correct |
5 | Correct | 2 ms | 256 KB | Output is correct |
6 | Correct | 2 ms | 256 KB | Output is correct |
7 | Correct | 2 ms | 256 KB | Output is correct |
8 | Correct | 2 ms | 256 KB | Output is correct |
9 | Correct | 2 ms | 256 KB | Output is correct |
10 | Correct | 2 ms | 256 KB | Output is correct |
11 | Correct | 2 ms | 376 KB | Output is correct |
12 | Correct | 2 ms | 256 KB | Output is correct |
13 | Correct | 2 ms | 256 KB | Output is correct |
14 | Correct | 2 ms | 376 KB | Output is correct |
15 | Correct | 2 ms | 256 KB | Output is correct |
16 | Correct | 2 ms | 256 KB | Output is correct |
17 | Correct | 2 ms | 256 KB | Output is correct |
18 | Correct | 2 ms | 376 KB | Output is correct |
19 | Correct | 2 ms | 256 KB | Output is correct |
20 | Correct | 2 ms | 256 KB | Output is correct |
21 | Correct | 2 ms | 508 KB | Output is correct |
22 | Correct | 2 ms | 376 KB | Output is correct |
23 | Correct | 2 ms | 376 KB | Output is correct |
24 | Correct | 2 ms | 380 KB | Output is correct |
25 | Correct | 3 ms | 376 KB | Output is correct |
26 | Correct | 3 ms | 376 KB | Output is correct |
27 | Correct | 2 ms | 376 KB | Output is correct |
28 | Correct | 2 ms | 376 KB | Output is correct |
29 | Correct | 3 ms | 376 KB | Output is correct |
30 | Correct | 2 ms | 376 KB | Output is correct |
31 | Correct | 2 ms | 376 KB | Output is correct |
32 | Correct | 2 ms | 376 KB | Output is correct |
33 | Correct | 2 ms | 376 KB | Output is correct |
34 | Correct | 2 ms | 376 KB | Output is correct |
35 | Correct | 2 ms | 376 KB | Output is correct |
36 | Correct | 2 ms | 380 KB | Output is correct |
37 | Correct | 2 ms | 376 KB | Output is correct |
38 | Correct | 2 ms | 376 KB | Output is correct |
39 | Correct | 3 ms | 504 KB | Output is correct |
40 | Correct | 2 ms | 504 KB | Output is correct |
# | Verdict | Execution time | Memory | Grader output |
---|---|---|---|---|
1 | Correct | 2 ms | 424 KB | Output is correct |
2 | Correct | 2 ms | 376 KB | Output is correct |
3 | Correct | 2 ms | 376 KB | Output is correct |
4 | Correct | 2 ms | 376 KB | Output is correct |
5 | Correct | 2 ms | 256 KB | Output is correct |
6 | Correct | 2 ms | 256 KB | Output is correct |
7 | Correct | 2 ms | 256 KB | Output is correct |
8 | Correct | 2 ms | 256 KB | Output is correct |
9 | Correct | 2 ms | 256 KB | Output is correct |
10 | Correct | 2 ms | 256 KB | Output is correct |
11 | Correct | 2 ms | 376 KB | Output is correct |
12 | Correct | 2 ms | 256 KB | Output is correct |
13 | Correct | 2 ms | 256 KB | Output is correct |
14 | Correct | 2 ms | 376 KB | Output is correct |
15 | Correct | 2 ms | 256 KB | Output is correct |
16 | Correct | 2 ms | 256 KB | Output is correct |
17 | Correct | 2 ms | 256 KB | Output is correct |
18 | Correct | 2 ms | 376 KB | Output is correct |
19 | Correct | 2 ms | 256 KB | Output is correct |
20 | Correct | 2 ms | 256 KB | Output is correct |
21 | Correct | 2 ms | 508 KB | Output is correct |
22 | Correct | 2 ms | 376 KB | Output is correct |
23 | Correct | 2 ms | 376 KB | Output is correct |
24 | Correct | 2 ms | 380 KB | Output is correct |
25 | Correct | 3 ms | 376 KB | Output is correct |
26 | Correct | 3 ms | 376 KB | Output is correct |
27 | Correct | 2 ms | 376 KB | Output is correct |
28 | Correct | 2 ms | 376 KB | Output is correct |
29 | Correct | 3 ms | 376 KB | Output is correct |
30 | Correct | 2 ms | 376 KB | Output is correct |
31 | Correct | 2 ms | 376 KB | Output is correct |
32 | Correct | 2 ms | 376 KB | Output is correct |
33 | Correct | 2 ms | 376 KB | Output is correct |
34 | Correct | 2 ms | 376 KB | Output is correct |
35 | Correct | 2 ms | 376 KB | Output is correct |
36 | Correct | 2 ms | 380 KB | Output is correct |
37 | Correct | 2 ms | 376 KB | Output is correct |
38 | Correct | 2 ms | 376 KB | Output is correct |
39 | Correct | 3 ms | 504 KB | Output is correct |
40 | Correct | 2 ms | 504 KB | Output is correct |
41 | Correct | 57 ms | 10772 KB | Output is correct |
42 | Correct | 43 ms | 5528 KB | Output is correct |
43 | Correct | 39 ms | 5496 KB | Output is correct |
44 | Correct | 39 ms | 5556 KB | Output is correct |
45 | Correct | 37 ms | 5496 KB | Output is correct |
46 | Correct | 93 ms | 10616 KB | Output is correct |
47 | Correct | 99 ms | 10672 KB | Output is correct |
48 | Correct | 123 ms | 10556 KB | Output is correct |
49 | Correct | 116 ms | 10692 KB | Output is correct |
50 | Correct | 22 ms | 4344 KB | Output is correct |
51 | Correct | 23 ms | 4472 KB | Output is correct |
52 | Correct | 23 ms | 4344 KB | Output is correct |
53 | Correct | 46 ms | 8568 KB | Output is correct |
54 | Correct | 47 ms | 8440 KB | Output is correct |
55 | Correct | 46 ms | 8440 KB | Output is correct |
56 | Correct | 3 ms | 504 KB | Output is correct |
57 | Correct | 9 ms | 3576 KB | Output is correct |
58 | Correct | 37 ms | 15084 KB | Output is correct |
59 | Correct | 83 ms | 20008 KB | Output is correct |
60 | Correct | 62 ms | 11512 KB | Output is correct |
61 | Correct | 67 ms | 11000 KB | Output is correct |