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Submission #557870

# Submission time Handle Problem Language Result Execution time Memory
557870 2022-05-06T07:47:36 Z fatemetmhr Cat in a tree (BOI17_catinatree) C++17
100 / 100
 70 ms 14704 KB 
// ~Be name khoda~ //
#include <bits/stdc++.h>
 
using namespace std;
 
typedef long long ll;
 
#define pb     push_back
#define all(x) x.begin(), x.end()
#define fi     first
#define se     second
 
const int maxn5 = 2e5 + 10;
 
int d;
int cntbd2[maxn5], mn[maxn5], little[maxn5];
vector <int> adj[maxn5];
 
inline void dfs(int v){
    mn[v] = maxn5;
    little[v] = 0;
    for(auto u : adj[v]){
        dfs(u);
        cntbd2[v] += cntbd2[u];
        mn[v] = min(mn[v], mn[u]);
        little[v] = max(little[v], little[u]);
    }
    if(mn[v] + little[v] < d){
        little[v] = -1;
    }
    mn[v]++;
    if(little[v] != -1)
        little[v]++;
    if(little[v] * 2 >= d){
        cntbd2[v]++;
        mn[v] = little[v];
        little[v] = -1;
    }
    //cout << v << ' ' << cntbd2[v] << ' ' << mn[v] << ' ' << little[v] << endl;
    return;
}
 
int main(){
    ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
 
    int n; cin >> n >> d;
    for(int i = 1; i < n; i++){
        int a; cin >> a;
        adj[a].pb(i);
    }
    dfs(0);
    cout << cntbd2[0] + (little[0] != -1) << endl;
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Correct 4 ms 5028 KB Output is correct
3 Correct 3 ms 4948 KB Output is correct
4 Correct 3 ms 4948 KB Output is correct
5 Correct 3 ms 4948 KB Output is correct
6 Correct 3 ms 5032 KB Output is correct
7 Correct 3 ms 4948 KB Output is correct
8 Correct 3 ms 4948 KB Output is correct
9 Correct 3 ms 4948 KB Output is correct
10 Correct 3 ms 4948 KB Output is correct
11 Correct 3 ms 4948 KB Output is correct
12 Correct 3 ms 4948 KB Output is correct
13 Correct 3 ms 4948 KB Output is correct
14 Correct 4 ms 4948 KB Output is correct
15 Correct 4 ms 4948 KB Output is correct
16 Correct 4 ms 4948 KB Output is correct
17 Correct 3 ms 4948 KB Output is correct
18 Correct 3 ms 4948 KB Output is correct
19 Correct 3 ms 5028 KB Output is correct
20 Correct 3 ms 4948 KB Output is correct

Subtask #2
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Correct 4 ms 5028 KB Output is correct
3 Correct 3 ms 4948 KB Output is correct
4 Correct 3 ms 4948 KB Output is correct
5 Correct 3 ms 4948 KB Output is correct
6 Correct 3 ms 5032 KB Output is correct
7 Correct 3 ms 4948 KB Output is correct
8 Correct 3 ms 4948 KB Output is correct
9 Correct 3 ms 4948 KB Output is correct
10 Correct 3 ms 4948 KB Output is correct
11 Correct 3 ms 4948 KB Output is correct
12 Correct 3 ms 4948 KB Output is correct
13 Correct 3 ms 4948 KB Output is correct
14 Correct 4 ms 4948 KB Output is correct
15 Correct 4 ms 4948 KB Output is correct
16 Correct 4 ms 4948 KB Output is correct
17 Correct 3 ms 4948 KB Output is correct
18 Correct 3 ms 4948 KB Output is correct
19 Correct 3 ms 5028 KB Output is correct
20 Correct 3 ms 4948 KB Output is correct
21 Correct 4 ms 5076 KB Output is correct
22 Correct 3 ms 4948 KB Output is correct
23 Correct 3 ms 5032 KB Output is correct
24 Correct 3 ms 5028 KB Output is correct
25 Correct 3 ms 5028 KB Output is correct
26 Correct 3 ms 4948 KB Output is correct
27 Correct 3 ms 5032 KB Output is correct
28 Correct 3 ms 5076 KB Output is correct
29 Correct 3 ms 5076 KB Output is correct
30 Correct 3 ms 5036 KB Output is correct
31 Correct 3 ms 5076 KB Output is correct
32 Correct 4 ms 5020 KB Output is correct
33 Correct 3 ms 5076 KB Output is correct
34 Correct 3 ms 4948 KB Output is correct
35 Correct 3 ms 4948 KB Output is correct
36 Correct 3 ms 5076 KB Output is correct
37 Correct 4 ms 5000 KB Output is correct
38 Correct 5 ms 5076 KB Output is correct
39 Correct 3 ms 5032 KB Output is correct
40 Correct 3 ms 5076 KB Output is correct

Subtask #3
49.0 / 49.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Correct 4 ms 5028 KB Output is correct
3 Correct 3 ms 4948 KB Output is correct
4 Correct 3 ms 4948 KB Output is correct
5 Correct 3 ms 4948 KB Output is correct
6 Correct 3 ms 5032 KB Output is correct
7 Correct 3 ms 4948 KB Output is correct
8 Correct 3 ms 4948 KB Output is correct
9 Correct 3 ms 4948 KB Output is correct
10 Correct 3 ms 4948 KB Output is correct
11 Correct 3 ms 4948 KB Output is correct
12 Correct 3 ms 4948 KB Output is correct
13 Correct 3 ms 4948 KB Output is correct
14 Correct 4 ms 4948 KB Output is correct
15 Correct 4 ms 4948 KB Output is correct
16 Correct 4 ms 4948 KB Output is correct
17 Correct 3 ms 4948 KB Output is correct
18 Correct 3 ms 4948 KB Output is correct
19 Correct 3 ms 5028 KB Output is correct
20 Correct 3 ms 4948 KB Output is correct
21 Correct 4 ms 5076 KB Output is correct
22 Correct 3 ms 4948 KB Output is correct
23 Correct 3 ms 5032 KB Output is correct
24 Correct 3 ms 5028 KB Output is correct
25 Correct 3 ms 5028 KB Output is correct
26 Correct 3 ms 4948 KB Output is correct
27 Correct 3 ms 5032 KB Output is correct
28 Correct 3 ms 5076 KB Output is correct
29 Correct 3 ms 5076 KB Output is correct
30 Correct 3 ms 5036 KB Output is correct
31 Correct 3 ms 5076 KB Output is correct
32 Correct 4 ms 5020 KB Output is correct
33 Correct 3 ms 5076 KB Output is correct
34 Correct 3 ms 4948 KB Output is correct
35 Correct 3 ms 4948 KB Output is correct
36 Correct 3 ms 5076 KB Output is correct
37 Correct 4 ms 5000 KB Output is correct
38 Correct 5 ms 5076 KB Output is correct
39 Correct 3 ms 5032 KB Output is correct
40 Correct 3 ms 5076 KB Output is correct
41 Correct 53 ms 11912 KB Output is correct
42 Correct 30 ms 8228 KB Output is correct
43 Correct 29 ms 8372 KB Output is correct
44 Correct 30 ms 8276 KB Output is correct
45 Correct 33 ms 8336 KB Output is correct
46 Correct 65 ms 11692 KB Output is correct
47 Correct 70 ms 11724 KB Output is correct
48 Correct 59 ms 11724 KB Output is correct
49 Correct 55 ms 11648 KB Output is correct
50 Correct 15 ms 6700 KB Output is correct
51 Correct 13 ms 6836 KB Output is correct
52 Correct 13 ms 6652 KB Output is correct
53 Correct 26 ms 8524 KB Output is correct
54 Correct 27 ms 8488 KB Output is correct
55 Correct 25 ms 8452 KB Output is correct
56 Correct 3 ms 5036 KB Output is correct
57 Correct 6 ms 6568 KB Output is correct
58 Correct 20 ms 12524 KB Output is correct
59 Correct 45 ms 14704 KB Output is correct
60 Correct 40 ms 12608 KB Output is correct
61 Correct 64 ms 12216 KB Output is correct