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Submission #343362

# Submission time Handle Problem Language Result Execution time Memory
343362 2021-01-03T18:51:13 Z egekabas Cat in a tree (BOI17_catinatree) C++14
100 / 100
 91 ms 19564 KB 
#include <bits/stdc++.h>
#define all(x) (x).begin(), (x).end()
#define ff first
#define ss second
#define pb push_back
#define mp make_pair
using namespace std;
typedef long long   ll;
typedef unsigned long long   ull;
typedef long double ld;
typedef pair<ll, ll>    pll;
typedef pair<ull, ull>    pull;
typedef pair<int, int>  pii;
typedef pair<ld, ld>  pld;
vector<int> g[200009];
int n, d;
int ans;
int dis[200009];
void dfs(int v){
    vector<int> vec;
    for(auto u : g[v]){
        dfs(u);
        vec.pb(dis[u]+1);
    }
    sort(vec.begin(), vec.end());
    reverse(vec.begin(), vec.end());
    while(vec.size() >= 2 && vec.back()+vec[vec.size()-2] < d){
        vec.pop_back();
        --ans;
    }
    if(vec.empty())
        dis[v] = 1e9;
    else
        dis[v] = vec.back();

    if(dis[v] >= d){
        dis[v] = 0;
        ++ans;
    }
}
int main() {
 
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
 
    //freopen("in.txt", "r", stdin);
    //freopen("out.txt", "w", stdout);

    cin >> n >> d;
    for(int i = 1; i < n; ++i){
        int prt;
        cin >> prt;
        g[prt].pb(i);
    }
    dfs(0);
    cout << ans << '\n';
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 4972 KB Output is correct
2 Correct 4 ms 5120 KB Output is correct
3 Correct 4 ms 4972 KB Output is correct
4 Correct 3 ms 4972 KB Output is correct
5 Correct 4 ms 4972 KB Output is correct
6 Correct 4 ms 4972 KB Output is correct
7 Correct 4 ms 4972 KB Output is correct
8 Correct 4 ms 5120 KB Output is correct
9 Correct 4 ms 4972 KB Output is correct
10 Correct 4 ms 4972 KB Output is correct
11 Correct 4 ms 4972 KB Output is correct
12 Correct 4 ms 4972 KB Output is correct
13 Correct 4 ms 4972 KB Output is correct
14 Correct 3 ms 4972 KB Output is correct
15 Correct 4 ms 4972 KB Output is correct
16 Correct 3 ms 4972 KB Output is correct
17 Correct 4 ms 4972 KB Output is correct
18 Correct 4 ms 4972 KB Output is correct
19 Correct 4 ms 4972 KB Output is correct
20 Correct 4 ms 4972 KB Output is correct

Subtask #2
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 4972 KB Output is correct
2 Correct 4 ms 5120 KB Output is correct
3 Correct 4 ms 4972 KB Output is correct
4 Correct 3 ms 4972 KB Output is correct
5 Correct 4 ms 4972 KB Output is correct
6 Correct 4 ms 4972 KB Output is correct
7 Correct 4 ms 4972 KB Output is correct
8 Correct 4 ms 5120 KB Output is correct
9 Correct 4 ms 4972 KB Output is correct
10 Correct 4 ms 4972 KB Output is correct
11 Correct 4 ms 4972 KB Output is correct
12 Correct 4 ms 4972 KB Output is correct
13 Correct 4 ms 4972 KB Output is correct
14 Correct 3 ms 4972 KB Output is correct
15 Correct 4 ms 4972 KB Output is correct
16 Correct 3 ms 4972 KB Output is correct
17 Correct 4 ms 4972 KB Output is correct
18 Correct 4 ms 4972 KB Output is correct
19 Correct 4 ms 4972 KB Output is correct
20 Correct 4 ms 4972 KB Output is correct
21 Correct 4 ms 5228 KB Output is correct
22 Correct 4 ms 5100 KB Output is correct
23 Correct 4 ms 5100 KB Output is correct
24 Correct 4 ms 5100 KB Output is correct
25 Correct 4 ms 5100 KB Output is correct
26 Correct 4 ms 5100 KB Output is correct
27 Correct 6 ms 5100 KB Output is correct
28 Correct 4 ms 5100 KB Output is correct
29 Correct 4 ms 5100 KB Output is correct
30 Correct 4 ms 5100 KB Output is correct
31 Correct 4 ms 5100 KB Output is correct
32 Correct 4 ms 5100 KB Output is correct
33 Correct 4 ms 5100 KB Output is correct
34 Correct 4 ms 5100 KB Output is correct
35 Correct 4 ms 5100 KB Output is correct
36 Correct 4 ms 5100 KB Output is correct
37 Correct 4 ms 5100 KB Output is correct
38 Correct 4 ms 5100 KB Output is correct
39 Correct 4 ms 5100 KB Output is correct
40 Correct 4 ms 5228 KB Output is correct

Subtask #3
49.0 / 49.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 4972 KB Output is correct
2 Correct 4 ms 5120 KB Output is correct
3 Correct 4 ms 4972 KB Output is correct
4 Correct 3 ms 4972 KB Output is correct
5 Correct 4 ms 4972 KB Output is correct
6 Correct 4 ms 4972 KB Output is correct
7 Correct 4 ms 4972 KB Output is correct
8 Correct 4 ms 5120 KB Output is correct
9 Correct 4 ms 4972 KB Output is correct
10 Correct 4 ms 4972 KB Output is correct
11 Correct 4 ms 4972 KB Output is correct
12 Correct 4 ms 4972 KB Output is correct
13 Correct 4 ms 4972 KB Output is correct
14 Correct 3 ms 4972 KB Output is correct
15 Correct 4 ms 4972 KB Output is correct
16 Correct 3 ms 4972 KB Output is correct
17 Correct 4 ms 4972 KB Output is correct
18 Correct 4 ms 4972 KB Output is correct
19 Correct 4 ms 4972 KB Output is correct
20 Correct 4 ms 4972 KB Output is correct
21 Correct 4 ms 5228 KB Output is correct
22 Correct 4 ms 5100 KB Output is correct
23 Correct 4 ms 5100 KB Output is correct
24 Correct 4 ms 5100 KB Output is correct
25 Correct 4 ms 5100 KB Output is correct
26 Correct 4 ms 5100 KB Output is correct
27 Correct 6 ms 5100 KB Output is correct
28 Correct 4 ms 5100 KB Output is correct
29 Correct 4 ms 5100 KB Output is correct
30 Correct 4 ms 5100 KB Output is correct
31 Correct 4 ms 5100 KB Output is correct
32 Correct 4 ms 5100 KB Output is correct
33 Correct 4 ms 5100 KB Output is correct
34 Correct 4 ms 5100 KB Output is correct
35 Correct 4 ms 5100 KB Output is correct
36 Correct 4 ms 5100 KB Output is correct
37 Correct 4 ms 5100 KB Output is correct
38 Correct 4 ms 5100 KB Output is correct
39 Correct 4 ms 5100 KB Output is correct
40 Correct 4 ms 5228 KB Output is correct
41 Correct 52 ms 10984 KB Output is correct
42 Correct 35 ms 7680 KB Output is correct
43 Correct 44 ms 7660 KB Output is correct
44 Correct 36 ms 7660 KB Output is correct
45 Correct 33 ms 7660 KB Output is correct
46 Correct 91 ms 10220 KB Output is correct
47 Correct 88 ms 10220 KB Output is correct
48 Correct 91 ms 10348 KB Output is correct
49 Correct 91 ms 10220 KB Output is correct
50 Correct 17 ms 6380 KB Output is correct
51 Correct 17 ms 6380 KB Output is correct
52 Correct 19 ms 6380 KB Output is correct
53 Correct 32 ms 7660 KB Output is correct
54 Correct 36 ms 7660 KB Output is correct
55 Correct 34 ms 7660 KB Output is correct
56 Correct 4 ms 5228 KB Output is correct
57 Correct 9 ms 7788 KB Output is correct
58 Correct 32 ms 17260 KB Output is correct
59 Correct 80 ms 19564 KB Output is correct
60 Correct 48 ms 11496 KB Output is correct
61 Correct 60 ms 10860 KB Output is correct