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Submission #553493

# Submission time Handle Problem Language Result Execution time Memory
553493 2022-04-26T03:48:59 Z Talha_Taki Cat in a tree (BOI17_catinatree) C++17
100 / 100
 98 ms 21864 KB 
#include <bits/stdc++.h>
 
using namespace std;
 
 
typedef long long ll;
typedef pair <int, int> pii;
 
vector <vector <int>> adj;
vector <pii> dp;

int d;

void dfs(int u) {
    if (adj[u].empty()) {
        dp[u] = make_pair(1, 0);
        return ;
    }

    int ans = 0;
    vector <pii> a;
    for(int v : adj[u]) {
        dfs(v);
        a.push_back(dp[v]);
        ans += dp[v].first;
    }

    sort(a.begin(), a.end(), [] (const pii &a, const pii &b) {
        return a.second < b.second;
    });

    int dist = a[0].second + 1;
    int size = adj[u].size();
    int i;
    for(i = 1; i < size; ++i) {
        if (a[i-1].second + 2 + a[i].second < d) {
            ans--;
            dist = a[i].second + 1;
        }
        else break;
    }

    if (a[i-1].second + 1 >= d) {
        ans++;
        dist = 0;
    }

    dp[u] = make_pair(ans, dist);
}

 
int main(const int argc, const char *argv[]) {
 
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);

    int n;
    cin >> n >> d;

    adj.resize(n);
    dp.resize(n);

    for(int i = 1; i < n; ++i) {
        int p;
        cin >> p;

        adj[p].push_back(i);
    }

    dfs(0);

    cout << dp[0].first;

    return 0;
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 320 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 320 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 0 ms 328 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 1 ms 320 KB Output is correct
18 Correct 1 ms 324 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 1 ms 212 KB Output is correct

Subtask #2
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 320 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 320 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 0 ms 328 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 1 ms 320 KB Output is correct
18 Correct 1 ms 324 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 1 ms 212 KB Output is correct
21 Correct 1 ms 468 KB Output is correct
22 Correct 1 ms 320 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 320 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 316 KB Output is correct
28 Correct 1 ms 324 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 1 ms 340 KB Output is correct
31 Correct 1 ms 340 KB Output is correct
32 Correct 1 ms 340 KB Output is correct
33 Correct 1 ms 340 KB Output is correct
34 Correct 1 ms 320 KB Output is correct
35 Correct 1 ms 340 KB Output is correct
36 Correct 1 ms 340 KB Output is correct
37 Correct 1 ms 340 KB Output is correct
38 Correct 1 ms 324 KB Output is correct
39 Correct 1 ms 340 KB Output is correct
40 Correct 1 ms 468 KB Output is correct

Subtask #3
49.0 / 49.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 320 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 320 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 0 ms 328 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 1 ms 320 KB Output is correct
18 Correct 1 ms 324 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 1 ms 212 KB Output is correct
21 Correct 1 ms 468 KB Output is correct
22 Correct 1 ms 320 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 320 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 316 KB Output is correct
28 Correct 1 ms 324 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 1 ms 340 KB Output is correct
31 Correct 1 ms 340 KB Output is correct
32 Correct 1 ms 340 KB Output is correct
33 Correct 1 ms 340 KB Output is correct
34 Correct 1 ms 320 KB Output is correct
35 Correct 1 ms 340 KB Output is correct
36 Correct 1 ms 340 KB Output is correct
37 Correct 1 ms 340 KB Output is correct
38 Correct 1 ms 324 KB Output is correct
39 Correct 1 ms 340 KB Output is correct
40 Correct 1 ms 468 KB Output is correct
41 Correct 36 ms 11720 KB Output is correct
42 Correct 23 ms 5520 KB Output is correct
43 Correct 24 ms 5564 KB Output is correct
44 Correct 28 ms 5656 KB Output is correct
45 Correct 35 ms 5608 KB Output is correct
46 Correct 62 ms 10940 KB Output is correct
47 Correct 98 ms 10960 KB Output is correct
48 Correct 72 ms 10976 KB Output is correct
49 Correct 61 ms 10912 KB Output is correct
50 Correct 12 ms 4308 KB Output is correct
51 Correct 16 ms 4436 KB Output is correct
52 Correct 13 ms 4400 KB Output is correct
53 Correct 24 ms 8496 KB Output is correct
54 Correct 28 ms 8468 KB Output is correct
55 Correct 34 ms 8492 KB Output is correct
56 Correct 1 ms 468 KB Output is correct
57 Correct 5 ms 3920 KB Output is correct
58 Correct 25 ms 16648 KB Output is correct
59 Correct 73 ms 21864 KB Output is correct
60 Correct 40 ms 12396 KB Output is correct
61 Correct 47 ms 11356 KB Output is correct